Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 58
Filter
Add more filters

Country/Region as subject
Publication year range
1.
Graefes Arch Clin Exp Ophthalmol ; 261(10): 2935-2944, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37247002

ABSTRACT

PURPOSE: To evaluate the outcomes of micropulse transscleral laser therapy (MP-TLT) in patients with uncontrolled glaucoma and prior glaucoma aqueous tube shunt. METHODS: In this single­center, retrospective, interventional case series, eyes that underwent MP-TLT and had prior glaucoma aqueous tube shunt surgeries were included. The Cyclo Glaucoma Laser System (IRIDEX Corporation, Mountain View, CA, USA) with the MicroPulse P3 probe (version 1) was used. Post­operative data were collected at day 1, week 1, and months 1, 3, 6, 12, 18, 24, 30 and 36. RESULTS: A total of 84 eyes (84 patients) with mean age of 65.8 ± 15.2 years and with advanced glaucoma (baseline mean deviation -16.25 ± 6.80 dB and best-corrected visual acuity 0.82 ± 0.83 logMar) were included in the study. Baseline mean IOP was 19.95 ± 5.6 mm Hg with a mean number of medications 3.39 ± 1.02. There were statistically significant differences in IOP between baseline and all follow-up visits (p < 0.01 for all). The mean percentage of IOP reduction between baseline and different follow-up visits ranged from 23.4% to 35.5% (p < 0.01). There was a significant reduction of visual acuity (≥ 2-lines) at 1 year (30.3%) and 2 years (76.78%). There was a statistically significant reduction in the number of glaucoma medications between baseline and all follow-up visits after postoperative week 1 (p < 0.05 for all). No severe complications including persistent hypotony and related complications were observed. At the last follow-up visit, only 24 (28%) eyes out of 84 eyes remained in the study. CONCLUSION: MP-TLT is an effective treatment for reducing IOP and decreasing the number of medications in patients with advanced glaucoma and prior glaucoma aqueous tube shunt.


Subject(s)
Glaucoma , Laser Therapy , Humans , Middle Aged , Aged , Aged, 80 and over , Intraocular Pressure , Retrospective Studies , Laser Coagulation , Ciliary Body/surgery , Glaucoma/surgery , Treatment Outcome , Sclera/surgery
2.
Int Ophthalmol ; 40(12): 3377-3391, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32776301

ABSTRACT

PURPOSE: To compare three-year surgical outcomes of trabeculectomy versus Ahmed valves in patients with prior failed trabeculectomy. METHODS: This is a longitudinal retrospective comparative study of one-hundred twenty adult patients with prior failed trabeculectomy who underwent a repeat trabeculectomy or Ahmed valve implant. Demographic and clinical data were collected up to 3 years on all study participants at the Kresge Eye Institute from 2004 to 2016. Visual acuity, intraocular pressure, number of intraocular pressure reducing medications, and success rates at various time points up to 3 years after repeat surgery were the main outcome variables. RESULTS: Sixty-five and sixty eyes were included in the trabeculectomy and the Ahmed valve groups, respectively. Baseline intraocular pressure significantly decreased in both groups at 3 years (p < 0.01). The number of medications was relatively similar to baseline in both study groups at 3 years (p > 0.05). There was no statistically significant difference between the two groups in visual acuity, percentage of intraocular pressure reduction, number of medications, or success rates at any follow-up time points (p > 0.05 for all). CONCLUSIONS AND RELEVANCE: After 3 years, both trabeculectomy and Ahmed valves significantly reduced intraocular pressure from baseline, but with relatively similar number of medications compared to baseline. There was no significant difference in any outcome measure between trabeculectomy and Ahmed valves at any follow-up time points. These results may suggest neither trabeculectomy or Ahmed valves are superior in patients with previously failed trabeculectomies.


Subject(s)
Glaucoma Drainage Implants , Glaucoma , Trabeculectomy , Adult , Follow-Up Studies , Glaucoma/surgery , Humans , Intraocular Pressure , Postoperative Complications , Retrospective Studies , Treatment Outcome
3.
Optom Vis Sci ; 96(7): 492-499, 2019 07.
Article in English | MEDLINE | ID: mdl-31274737

ABSTRACT

SIGNIFICANCE: Determining risk factors for posterior capsule opacification will allow for further interventions to reduce the risk of development and thus additional procedures. PURPOSE: The purpose of this study was to investigate risk factors associated with development of clinically significant posterior capsule opacification requiring yttrium aluminum garnet (YAG) capsulotomy. METHODS: Medical records of patients (≥18 years) who underwent cataract surgery between January 1, 2011, and March 31, 2014, at Kresge Eye Institute were reviewed. Three hundred eyes requiring YAG capsulotomy up to 3 years after cataract surgery were included in the YAG capsulotomy group. Three hundred eyes not requiring YAG capsulotomy up to 3 years after cataract surgery were selected via age-matched simple randomization (control group). RESULTS: The YAG capsulotomy group included patients with younger age (65.8 ± 11.3 vs. 70.1 ± 10.6 years, P < .001), more men (42.67 vs. 34.67%, P = .04), fewer patients with hypertension (73.00 vs. 83.00%, P < .001), and more patients with hydrophilic intraocular lenses (74.67 vs. 47.00%, P < .001). Logistic regression analysis demonstrated a negative association between YAG capsulotomy and age (coefficient, -0.04; 95% confidence interval [CI], 0.95 to 0.98; P < .001) and hydrophobic intraocular lenses (coefficient, -1.50; 95% CI, 0.15 to 0.33; P < .001), and a positive association with presence of glaucoma (coefficient, 0.88; 95% CI, 1.39 to 4.17; P = .002). Elapsed time to YAG capsulotomy was sooner in patients with a history of uveitis (95% CI, 5.10 to 9.70 months; P = .02) and insertion of hydrophilic intraocular lenses (95% CI, 18.67 to 21.57 months; P < .001). CONCLUSIONS: Results of this study suggest that development of visually significant posterior capsule opacification is associated with younger age, glaucoma, and hydrophilic intraocular lenses, and it occurs earlier among those with hydrophilic intraocular lenses and a history of uveitis.


Subject(s)
Capsule Opacification/surgery , Lasers, Solid-State/therapeutic use , Posterior Capsule of the Lens/surgery , Posterior Capsulotomy/methods , Age Factors , Aged , Capsule Opacification/etiology , Cataract Extraction , Female , Humans , Lenses, Intraocular/adverse effects , Male , Middle Aged , Retrospective Studies , Risk Factors
4.
Retina ; 38 Suppl 1: S49-S59, 2018 09.
Article in English | MEDLINE | ID: mdl-29232332

ABSTRACT

PURPOSE: To evaluate outcomes of repeat pars plana vitrectomy for proliferative vitreoretinopathy after previous failed pars plana vitrectomy. METHODS: This is a retrospective case series including 51 eyes of 50 patients who underwent repeat surgery after failed previous pars plana vitrectomy for proliferative vitreoretinopathy from 2000 to 2015 at the Kresge Eye Institute, Detroit, MI. Patients were classified into successful and unsuccessful groups. Success was defined as retinal reattachment, silicone oil removed, and best-corrected visual acuity (BCVA) ≥5/200 at the final follow-up visit. RESULTS: Forty-three eyes (84.3%) were successfully reattached at the last follow-up. Seventeen (33.3%) eyes were deemed successful and 34 (66.7%) eyes unsuccessful according to our criteria. Compared with the successful group, eyes in the unsuccessful group had more eyes with preoperative BCVA <5/200 (P < 0.001), preoperative BCVA of hand motion or worse (P = 0.002), preoperative flare ≥Grade 2+ (P = 0.03), preoperative posterior breaks (P = 0.02), previous retinectomy (P = 0.04), and final postoperative hypotony (intraocular pressure ≤ 5 mmHg) (P = 0.005). Eyes with silicone oil removed were more likely to have BCVA ≥5/200 (P < 0.001) at the final follow-up visit. Location of patients >100 miles (P = 0.04) from Detroit and preoperative BCVA of hand motion or worse (P = 0.01) were significantly associated with failure in the logistic regression analysis. CONCLUSION: Success after repeat surgery for proliferative vitreoretinopathy should include ambulatory vision, retinal reattachment, and silicone oil removal. We identified several preoperative and perioperative factors that were associated with success in the bivariate and logistic analyses. The decision to perform surgical reoperation in these patients should be based on multiple factors, most importantly preoperative BCVA.


Subject(s)
Fluorocarbons/pharmacology , Postoperative Complications/surgery , Retinal Detachment/surgery , Silicone Oils/adverse effects , Visual Acuity , Vitrectomy/adverse effects , Vitreoretinopathy, Proliferative/surgery , Endotamponade/adverse effects , Female , Follow-Up Studies , Humans , Male , Middle Aged , Reoperation , Retinal Detachment/diagnosis , Retinal Detachment/etiology , Retrospective Studies , Tomography, Optical Coherence , Treatment Failure , Treatment Outcome
5.
Orbit ; 36(6): 411-418, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28816552

ABSTRACT

PURPOSE: To determine the causes of lacrimal gland inflammation based on histopathology and systemic evaluation. METHODS: This is a retrospective case series study. From the University of British Columbia Orbit Clinic between January 1976 and December 2008, we reviewed the medical records of 60 patients who presented with inflammatory features of the lacrimal gland (i.e., erythema, edema, or tenderness) in which the diagnoses were not possible clinically and on imaging alone. As was our routine practice, all these patients underwent lacrimal gland biopsy before starting any treatment. RESULTS: The histopathologic findings of the 60 patients showed that 37 (61.7%) had identifiable types of lacrimal inflammation including 10 with Sjogren's syndrome, seven with sarcoidal reaction, six with feature of granulomatosis with polyangiitis (formerly known as Wegener's granulomatosis), five with lymphoma, two with sclerosing inflammation, two with IgG4-related dacryoadenitis, and one patient each with infectious dacryoadenitis, myoepithelial carcinoma, xanthogranuloma, eosinophilic angiocentric fibrosis, and eosinophilic allergic granulomatous nodule. The histopathologic findings of the remaining 23 (38.3%) patients showed nonspecific inflammation of the lacrimal gland. 23 patients (38.3%) had associated systemic diseases. 48 patients (80%) were treated successfully and 10 (16.7%) had recurrence of inflammation. CONCLUSIONS: We recommend that in patients presenting with lacrimal gland inflammation (i.e., erythema, edema, tenderness) in which the specific diagnosis cannot be made clinically and on imaging, biopsy is warranted for accurate diagnosis and appropriate treatment. We found that the majority of these patients (61.7%) had specific histopathology, and 38% had systemic diseases.


Subject(s)
Diplopia/diagnosis , Edema/diagnosis , Erythema/diagnosis , Inflammation/diagnosis , Lacrimal Apparatus Diseases/diagnosis , Adolescent , Adult , Aged , Aged, 80 and over , Autoimmune Diseases/pathology , Biopsy , Child , Dacryocystitis/pathology , Diplopia/drug therapy , Edema/drug therapy , Erythema/drug therapy , Female , Glucocorticoids/therapeutic use , Granulomatosis with Polyangiitis/pathology , Humans , Immunosuppressive Agents/therapeutic use , Inflammation/drug therapy , Lacrimal Apparatus Diseases/drug therapy , Male , Middle Aged , Orbital Pseudotumor/pathology , Retrospective Studies , Sjogren's Syndrome/pathology
6.
Ophthalmic Plast Reconstr Surg ; 32(2): 123-6, 2016.
Article in English | MEDLINE | ID: mdl-25811164

ABSTRACT

PURPOSE: To study angular and temporal vein engorgement following periorbital hyaluronic acid gel (HAG) injection. METHODS: In this retrospective study, the authors reviewed the photographs of 805 patients who had periorbital HAG injection at Jules Stein Eye Institute Oculoplastic Clinic between January 2004 and January 2014. HAG injections were used to fill the orbital hollow, zygomatic hollow, septal confluence hollow, and cheek. The inclusion criteria were patients who had at least 1 pre-, immediate post-, and late postinjection photographs. Immediate postinjection photographs were taken right after HAG injection, and late postinjection photographs were taken at the following visit before any injection. The exclusion criteria were patients with any previous ocular surgery 6 months before filler injection, patients with orbital diseases, and patients who had HAG injections for functional purposes. The photographs were evaluated for the presence of angular and temporal vein engorgement at any of the injections during the follow-up visits. The photographs of eyes with vein engorgement were graded on a scale of 0 (no engorgement), 1 (mild engorgement), 2 (moderate engorgement), and 3 (severe engorgement). RESULTS: There were 78 eligible patients (156 orbits; 68 females and 10 males) with average age of 59.4 ± 13.4 years. The authors found 18 orbits of 12 patients (15.4%; 6 unilateral and 6 bilateral) with angular vein engorgement at least 1 time after HAG injection during the follow-up visits. The frequency of temporal vein engorgement was 9.1%. The mean ± SD of angular vein grading for engorgement increased from 0.72 ± 0.51 on preinjection photographs to 1.45 ± 0.88 on immediate postinjection photographs (p = 0.0001) and 0.89 ± 0.50 on late postinjection photographs (p = 0.04). The mean ± SD of angular vein grading for engorgement was 0.67 ± 0.55 on the first preinjection photographs, which increased to 1.10 ± 0.50 on the last late postinjection photographs. The difference was statistically significant (p = 0.001). CONCLUSIONS: Angular and temporal vein engorgement occurred following HAG injection in the periorbital region. The engorgement occurred immediately after injections and decreased considerably but not completely in the following visit.


Subject(s)
Dermal Fillers/adverse effects , Eye/blood supply , Hyperemia/etiology , Nose/blood supply , Scalp/blood supply , Veins , Aged , Cosmetic Techniques , Female , Gels , Humans , Hyaluronic Acid/administration & dosage , Hyaluronic Acid/adverse effects , Hyperemia/diagnosis , Injections, Intraocular , Male , Middle Aged , Orbit , Retrospective Studies , Viscosupplements/administration & dosage , Viscosupplements/adverse effects
7.
Ophthalmic Plast Reconstr Surg ; 32(5): 337-41, 2016.
Article in English | MEDLINE | ID: mdl-26237530

ABSTRACT

PURPOSE: To investigate the effect of prostaglandin analog eyedrops on the periorbital soft tissue using high-resolution ultrasonography. METHODS: In this cross-sectional study, the authors included patients with bilateral glaucoma on unilateral prostaglandin therapy for the past 12 or more contiguous months. High-resolution ultrasonography was performed bilaterally on the upper and lower eyelids of each subject to measure thicknesses of dermis, orbicularis oculi muscle, and skin to arcus marginalis distance. Comparisons were made between eyes on prostaglandin eyedrops versus those not on prostaglandin analogs. RESULTS: Twenty patients (16 females, 4 males) with a mean age of 67.2 ± 6.4 years were recruited. The mean duration of prostaglandin analog therapy was 5.4 ± 3.9 years. The authors found that eyes on prostaglandin analog therapy had statistically significantly reduced thicknesses of dermis, orbicularis oculi muscle, and skin to arcus marginalis distance in the upper and lower eyelids compared with the fellow eyes (p < 0.05 for all). In univariate regression analysis, the amount of changes in thicknesses of dermis, orbicularis oculi muscle, and skin to arcus marginalis distance among eyes on prostaglandin analog therapy and the fellow eyes was not statistically significantly associated with different variables including age, gender, years of being on prostaglandin analog therapy, type of prostaglandin analog, history of glaucoma and/or cataract surgeries, intraocular pressure, and number of glaucoma medications. CONCLUSIONS: The findings indicate that eyes on prostaglandin analog therapy have reduced thicknesses of dermis, orbicularis oculi muscle, and skin to arcus marginalis distance compared with the fellow eyes.


Subject(s)
Eyelids/diagnostic imaging , Glaucoma/drug therapy , Oculomotor Muscles/diagnostic imaging , Prostaglandins/administration & dosage , Ultrasonography/methods , Aged , Cross-Sectional Studies , Dermis/diagnostic imaging , Dermis/drug effects , Eyelids/drug effects , Female , Follow-Up Studies , Glaucoma/diagnosis , Glaucoma/physiopathology , Humans , Male , Oculomotor Muscles/drug effects , Ophthalmic Solutions , Retrospective Studies , Time Factors
8.
Orbit ; 34(1): 45-50, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25280049

ABSTRACT

PURPOSE: To describe the association of lacrimal gland inflammation with alopecia areata. METHODS: We reviewed the medical records of 4 patients diagnosed with lacrimal gland inflammation who had an antecedent or subsequent episode of alopecia. Data was collected on the presentation age, gender, medical history, disease onset, symptoms and signs, imaging, histopathology, systemic evaluation, management and outcome. Pathology and imaging results were correlated with clinical findings. RESULTS: Three patients were Asian and one Caucasian. Two developed alopecia after presentation for lacrimal inflammation. The remaining two had a history of alopecia totalis (2 years and 10 years). Three of the 4 patients presented or developed other systemic disorders, including seizures, thrombocytopenia, optic neuritis, ulcerative colitis, allergic rhinitis, lymphadenopathy, vasculitic rash and positive p-ANCA values. All received oral corticosteroids, with the addition of methotrexate therapy in one for relapsing inflammation. CONCLUSIONS: Lacrimal gland inflammation and alopecia areata are autoimmune processes that can be seen in association with each other.


Subject(s)
Alopecia Areata/immunology , Autoimmune Diseases/diagnosis , Lacrimal Apparatus Diseases/diagnosis , Lacrimal Apparatus Diseases/immunology , Adult , Aged , Alopecia Areata/therapy , Autoimmune Diseases/therapy , Biopsy , Child , Diagnosis, Differential , Female , Humans , Inflammation/pathology , Lacrimal Apparatus Diseases/therapy , Male
9.
Optom Vis Sci ; 91(9): 1084-8, 2014 Sep.
Article in English | MEDLINE | ID: mdl-25062131

ABSTRACT

PURPOSE: To compare corneal stromal and endothelial cells after photorefractive keratectomy with intraoperative mitomycin C in alcohol-assisted versus mechanical epithelial debridement using confocal microscopy. METHODS: This prospective randomized comparative study was performed on 88 eyes (44 patients) with myopia up to -6.00 diopters. The right eye of each patient was randomly assigned to either mechanical or alcohol-assisted groups, and the left eye was assigned to the alternate group. Confocal microscopy was performed preoperatively and at 3 months postoperatively. The main outcome measures were epithelial thickness; number of keratocytes in the anterior, mid-, and posterior stroma; and characteristics of the central corneal endothelial cells in terms of density, mean cell area, and polymegathism and hexagonality. RESULTS: Three months after surgery, no statistically significant difference was noted between the study groups in terms of epithelial thickness. We also found no statistically significant difference in central corneal endothelial cells regarding cell density, mean cell area, hexagonality, or polymegathism. Compared with baseline values, the density of mid- and posterior stromal keratocytes showed no significant change in either group, whereas it decreased significantly in the anterior stroma in both groups 3 months after surgery. CONCLUSIONS: We found that the adverse effects of photorefractive keratectomy with mitomycin C on central corneal endothelial cells were comparable between the mechanical and alcohol-assisted epithelial debridement groups and the significant decrease in postoperative keratocyte density in anterior stroma was comparable between the two groups. The choice of their application could be left to the discretion of the ophthalmologist.


Subject(s)
Alkylating Agents/administration & dosage , Debridement/methods , Ethanol/administration & dosage , Lasers, Excimer/therapeutic use , Mitomycin/administration & dosage , Photorefractive Keratectomy/methods , Solvents/administration & dosage , Adult , Cell Count , Corneal Keratocytes/pathology , Corneal Stroma/pathology , Endothelium, Corneal/pathology , Female , Humans , Intraoperative Period , Male , Microscopy, Confocal , Middle Aged , Myopia/surgery , Prospective Studies , Young Adult
10.
Orbit ; 33(5): 343-51, 2014 Oct.
Article in English | MEDLINE | ID: mdl-25191825

ABSTRACT

PURPOSE: To review indications and clinical outcomes in a series of orbitocranial tumors treated surgically through a transorbital extradural approach without craniotomy. METHODS: In this retrospective case series, all patients who underwent surgery through a transorbital extradural approach without craniotomy for benign orbitocranial tumors involving the dura or extending into the anterior or middle cranial fossae were analyzed. RESULTS: Twenty-seven patients (20 females and 7 males) were included. Median age was 47.0 years (range: 6-74 years) and median follow-up time was 43.5 months (range: 3-148 months). The median preoperative best-corrected visual acuity (logMAR) was improved from 0.35 (range: 0-2.6) to 0.1 (range: 0-2.6) at the last follow-up (p < 0.03). The mean ± SD preoperative exophthalmos significantly decreased from 20.4 ± 3.4 mm to 13.1 ± 3.5 mm at the last follow-up visit (p < 0.01). Four postoperative complications were noted and included one case each of ptosis, numbness, diplopia (transient for 6 months), and cranial nerve VI palsy (transient for 4 months). CONCLUSIONS: The transorbital extradural approach provides access to the deep orbit and adjacent extradural cranial spaces. Benign orbital tumors that have eroded through the orbital roof, are located in the orbital apex abutting the anterior cavernous sinus and tumors requiring debulking are all processes that can be potentially approached through the transorbital extradural route. Compared to open craniotomy, the incision is smaller, the access more direct and specific risks of open craniotomy are reduced.


Subject(s)
Adenoma, Pleomorphic/surgery , Meningeal Neoplasms/surgery , Meningioma/surgery , Ophthalmologic Surgical Procedures , Orbital Neoplasms/surgery , Paranasal Sinus Neoplasms/surgery , Skull Neoplasms/surgery , Adenoma, Pleomorphic/diagnosis , Adolescent , Adult , Aged , Child , Child, Preschool , Craniotomy , Eye Movements/physiology , Female , Humans , Magnetic Resonance Imaging , Male , Meningeal Neoplasms/diagnosis , Meningioma/diagnosis , Middle Aged , Orbital Neoplasms/diagnosis , Paranasal Sinus Neoplasms/diagnosis , Retrospective Studies , Skull Neoplasms/diagnosis , Visual Acuity/physiology
11.
Optom Vis Sci ; 90(8): 745-53, 2013 Aug.
Article in English | MEDLINE | ID: mdl-23851305

ABSTRACT

The National Eye Institute Visual Function Questionnaire 25 (NEI-VFQ-25) is the most commonly used patient-reported outcome measure to assess vision-related quality of life in patients with glaucoma. Glaucoma negatively affects the composite and several NEI-VFQ subscale scores; this effect is correlated with the severity of glaucomatous visual field loss. Contrast sensitivity, glare, and dark adaptation are potential items that could be added to the NEI-VFQ to make it more responsive to changes in vision-related quality of life in patients with glaucoma.


Subject(s)
Glaucoma/psychology , National Eye Institute (U.S.)/standards , Quality of Life/psychology , Sickness Impact Profile , Surveys and Questionnaires , Contrast Sensitivity , Dark Adaptation , Glare , Humans , United States
12.
J Glaucoma ; 32(2): e3-e10, 2023 02 01.
Article in English | MEDLINE | ID: mdl-36222877

ABSTRACT

We discuss how ophthalmic endoscopy was used in the management of 6 cases with atypical uveitis glaucoma hyphema syndrome. For case 1, the endoscope was used to remove a retained haptic foreign body after an intraocular lens (IOL) exchange with an iris-sutured IOL for a complete capsular bag-IOL complex dislocation. In case 2, the endoscope was key in identifying the presence and location of vascular lesions at the site of previous pars plana sclerotomies. In case 3, the endoscope enabled visualization of a large segmental Soemmering's Ring pushing a 3-piece IOL haptic into the posterior iris. For case 4, the endoscope allowed viewing of the sharp edge of the optic where the haptic of a one-piece lens had been amputated, and the sharp edge of the cut optic was anteriorly oriented and continuing to rub the posterior iris. In case 5, the endoscope confirmed the presence of 1 haptic of a 1-piece lens out of the capsular bag and in the sulcus space. Also, it showed that the capsular bag had inadequate zonular support to attempt repositioning the haptic into the bag. In case 6, the endoscope was helpful in identifying a 1-piece plate haptic IOL in the sulcus, with synechiae and anterior location causing iris bulging inferiorly.


Subject(s)
Glaucoma, Open-Angle , Lens Diseases , Lenses, Intraocular , Uveitis , Humans , Lens Implantation, Intraocular/adverse effects , Hyphema/diagnosis , Hyphema/etiology , Hyphema/surgery , Postoperative Complications , Intraocular Pressure , Lenses, Intraocular/adverse effects , Uveitis/complications , Uveitis/diagnosis , Uveitis/surgery , Glaucoma, Open-Angle/complications , Endoscopy/adverse effects
13.
Mol Vis ; 18: 1991-5, 2012.
Article in English | MEDLINE | ID: mdl-22876126

ABSTRACT

PURPOSE: To compare the aqueous concentration of erythropoietin (EPO) in eyes with primary open-angle (POAG), pseudoexfoliative (PXFG), and neovascular (NVG) glaucoma with age-matched eyes with cataracts, and to correlate its concentration with other factors including age, gender, intraocular pressure (IOP), type of glaucoma, and severity of glaucoma. METHODS: In this prospective non-randomized comparative study, a total of 26 eyes with cataracts (control group) and 92 glaucomatous eyes (POAG, 40 eyes; PXFG, 26 eyes; NVG, 26 eyes) were enrolled. Aqueous samples (0.1 to 0.2 ml) were obtained during phacoemulsification, trabeculectomy, phacotrabeculectomy, or Ahmed valve glaucoma implants. The aqueous concentration of EPO was measured using an enzyme-linked immunosorbent assay. RESULTS: The mean±SEM aqueous level of EPO was statistically significantly higher in eyes with glaucoma (56.7±9.3 mIU/ml) compared to the control group (0.8±0.51 mIU/ml; p<0.001). Eyes with NVG had the highest aqueous level of EPO. Aqueous EPO concentrations remained considerably elevated even in eyes with controlled IOP in all three types of glaucoma. Eyes with PXFG displayed the greatest change in aqueous EPO concentration proportionate to the IOP level. In simple regression analysis, IOP, mean deviation, and the type of glaucoma were the factors that had a statistically significantly positive correlation with the aqueous level of EPO (p=0.011 and <0.001, respectively). Only the type of glaucoma remained statistically significant in the multiple regression analysis (adjusted R(2)=0.278). CONCLUSIONS: Compared to the control group, the aqueous humor EPO concentration is increased in eyes with POAG, PXFG, and NVG, both with and without controlled IOP. The aqueous level of EPO was more proportionate to the level of IOP in eyes with PXFG compared to eyes with POAG and NVG.


Subject(s)
Aqueous Humor/chemistry , Cataract/metabolism , Erythropoietin/metabolism , Exfoliation Syndrome/metabolism , Glaucoma, Neovascular/metabolism , Glaucoma, Open-Angle/metabolism , Age Factors , Aged , Cataract/pathology , Exfoliation Syndrome/pathology , Female , Glaucoma, Neovascular/pathology , Glaucoma, Open-Angle/pathology , Humans , Intraocular Pressure , Male , Middle Aged , Prospective Studies , Regression Analysis , Severity of Illness Index , Sex Factors
14.
J Refract Surg ; 28(1): 59-64, 2012 Jan.
Article in English | MEDLINE | ID: mdl-21913630

ABSTRACT

PURPOSE: To investigate the effect of blunt foreign body impact on a human cornea after photorefractive keratectomy (PRK) and LASIK using a simulation model. METHODS: Computational simulations were performed using a finite element analysis program (LS-Dyna, Livermore Software Technology Corp). The blunt foreign body was set to impact at the center of the corneal surface models (after PRK and LASIK) with thicknesses of 500, 450, 400, 350, and 300 µm. Corneal rupture was assumed to occur at a peak stress of 9.45 MPa and at a strain of 18%. The foreign body projectile was blunt in shape, made from aluminum, contained plastic-kinematic properties, and had a density of 2700 kg/m(3). RESULTS: The projectile was launched at the center of the cornea with velocities ranging from 20 to 60 m/s. The threshold of impact velocities creating rupture in corneal thicknesses of 500, 450, 400, 350, and 300 µm were 33, 32.8, 30.7, 27.9, and 22.8 m/s, respectively, in the PRK model. In the LASIK model, the thresholds creating rupture in the stromal bed of the corneas with thicknesses of 500, 450, 400, 350, and 300 µm were 40, 38.1, 35.6, 31.5, and 26.7 m/s, respectively. The 110-µm corneal flap in the LASIK model ruptured at all velocities. CONCLUSIONS: Ruptures occurred at lower velocities in the PRK cornea model than in the corneal stromal bed of the LASIK model following blunt foreign body impact.


Subject(s)
Corneal Injuries , Eye Injuries/etiology , Finite Element Analysis , Keratomileusis, Laser In Situ , Photorefractive Keratectomy , Surgical Wound Dehiscence/etiology , Wounds, Nonpenetrating/etiology , Computer Simulation , Cornea/surgery , Humans , Lasers, Excimer/therapeutic use , Rupture , Surgical Flaps
15.
Retina ; 32(5): 967-71, 2012 May.
Article in English | MEDLINE | ID: mdl-22146127

ABSTRACT

BACKGROUND: To determine the effect of intravitreal administration of bevacizumab (1.25 mg/0.05 mL) on retrobulbar circulation of the injected and the fellow (uninjected) eyes in patients with neovascular age-related macular degeneration. METHODS: In this prospective study, the retrobulbar hemodynamics of 43 patients with neovascular age-related macular degeneration was examined by color Doppler ultrasonography. Peak systolic velocity, end-diastolic velocity, and resistive index values in the central retinal artery and short posterior ciliary artery in both injected and uninjected fellow eyes were measured at baseline and 7 days after a single intravitreal injection of bevacizumab. RESULTS: At baseline, the peak systolic velocity, end-diastolic velocity, and the resistive index in the central retinal artery and short posterior ciliary artery of the injected eye were not significantly different compared with the fellow uninjected eye (P > 0.05 for all). However, intravitreal bevacizumab induced a significant reduction in the peak systolic velocity and end-diastolic velocity and a significant rise in the resistive index of the central retinal artery and short posterior ciliary artery of the injected eye (P ≤ 0.006 for all). Peak systolic velocity and end-diastolic velocity decreased in the central retinal artery (P = 0.023 and P = 0.030) and the short posterior ciliary artery (P = 0.001 and P < 0.000) in the uninjected eye while the resistive index did not significantly change in central retinal artery (P = 0.114) and short posterior ciliary artery (P = 0.082) of the fellow eyes. CONCLUSION: Intravitreal injection of bevacizumab significantly affects ocular hemodynamic parameters of both the injected and the uninjected fellow eyes with neovascular age-related macular degeneration.


Subject(s)
Angiogenesis Inhibitors/administration & dosage , Antibodies, Monoclonal, Humanized/administration & dosage , Ciliary Arteries/physiology , Retinal Artery/physiology , Wet Macular Degeneration/drug therapy , Wet Macular Degeneration/physiopathology , Bevacizumab , Blood Flow Velocity , Blood Pressure/physiology , Female , Humans , Intraocular Pressure/physiology , Intravitreal Injections , Male , Middle Aged , Prospective Studies , Regional Blood Flow/drug effects , Ultrasonography, Doppler, Color , Vascular Endothelial Growth Factor A/antagonists & inhibitors , Wet Macular Degeneration/diagnosis
16.
J Curr Glaucoma Pract ; 16(1): 36-40, 2022.
Article in English | MEDLINE | ID: mdl-36060042

ABSTRACT

Aim: "Consensual ophthalmotonic reaction" refers to changes in intraocular pressure (IOP) in one eye, which is accompanied by a corresponding change in IOP in the contralateral eye. This study evaluates whether monocular administration of selective laser trabeculoplasty (SLT) leads to a consensual ophthalmotonic reaction and how long this effect lasts. Materials and methods: A retrospective chart review was performed on patients receiving SLT at Kresge Eye Institute in Detroit, MI, from January 2015 to August 2016. Patients were excluded if they had previous history of glaucoma incisional and/or laser procedures; required additional laser trabeculoplasty; had glaucoma medication changes during the follow-up period; experienced no decrease in IOP during the follow-up period; or had a diagnosis of angle closure on gonioscopy. Various demographic, clinical, and surgical data were collected. IOP measurements were collected at baseline and postoperatively at 1-3 months, 4-9 months, and 12-15 months. Results: At all follow-up periods, the IOP of the treated eye was decreased from baseline IOP (p ≤ 0.05, paired t-test). For the fellow eye, there was a statistically significantly decrease from baseline up to the 4-9 months follow-up period (p ≤ 0.05, paired t-test). Linear regression analysis of the percent reduction in IOP from baseline in the SLT-treated eye with the fellow eye shows a mild correlation at all-time points: R2 = 0.284 (p < 0.001) at 1-3 months; R2 = 0.348 (p < 0.001) at 4-9 months; R2 = 0.118 (p = 0.054) at 12-15 months. Conclusion: This study showed that monocular administration of SLT results in a consensual ophthalmotonic reaction. The consensual ophthalmotonic reaction appears to last for up to 4-9 months. Clinical significance: Therefore, although SLT does lead to a consensual ophthalmotonic reaction, monocular administration of SLT is not a reliable method of long-term IOP control for the contralateral non-SLT-treated eye. How to cite this article: Nassiri N, Mei F, Tokko H, et al. Consensual Ophthalmotonic Reaction Following Selective Laser Trabeculoplasty. J Curr Glaucoma Pract 2022;16(1):36-40.

17.
J Curr Glaucoma Pract ; 16(1): 11-16, 2022.
Article in English | MEDLINE | ID: mdl-36060045

ABSTRACT

Purpose: Using demographic, clinical, visual field, and optical coherence tomography (OCT) variables to study the association of 5-year glaucomatous progression in glaucoma suspect eyes. Patients and methods: This is a retrospective longitudinal clinical study. Inclusion criteria consisted of glaucoma suspect eyes (i.e., concerning cup-to-disk ratio and/or intraocular pressure (IOP) >21 mm Hg), age ≥ 30 years old, follow-up time of 5 years, best-corrected visual acuity (BCVA) of 20/100 or better, spherical equivalent (SE) higher than 8 diopters and an astigmatism less than 3 diopters. Eyes with glaucoma-determined by two consecutive, reliable visual field tests-were excluded, as well as any eyes with any clinically significant retinal or neurological disease. The percentage of glaucoma suspect eyes, which progressed to glaucoma within a 5-year period, was calculated. Study subjects were divided into the following groups: eyes that progressed to glaucoma and those that did not. Results: In the 288 patients which we looked at, 365 total eyes, 323 eyes had concerning cup-to-disk ratio and 42 had ocular hypertension. Bivariate analysis showed that the eyes which progressed to glaucoma had significantly worse mean deviation, increased pattern standard deviation (PSD), and less visual field index (VFI). Our bivariate analysis also showed a thinner average, superior and inferior retinal nerve fiber layer thickness (RNFL), and more severe average, superior, and inferior RNFL damages (i.e., color grading scale) at baseline. Logistic regression analysis showed that only PSD and severe inferior RNFL damage (i.e., red color) to be significantly associated with 5-year glaucomatous progression. Conclusion: Segmental RNFL damage and pattern standard deviation are associated with 5-year glaucomatous progression in glaucoma suspect eyes. How to cite this article: Nassiri N, Das S, Patel V, et al. Factors Associated with 5-year Glaucomatous Progression in Glaucoma Suspect Eyes: A Retrospective Longitudinal Study. J Curr Glaucoma Pract 2022;16(1):11-16.

18.
Graefes Arch Clin Exp Ophthalmol ; 249(11): 1593-616, 2011 Nov.
Article in English | MEDLINE | ID: mdl-21870086

ABSTRACT

Detection of visual field progression remains a challenging task despite the recent advances for better handling of longitudinal visual field data, some of which are incorporated in currently available perimeters. Standard achromatic perimetry remains the gold standard for detection of visual field progression. The authors present a practical and clinically relevant review of the main issues involved in detection of early glaucoma as well as detection of visual field progression in eyes with pre-existing glaucomatous damage. After discussing some basic concepts in perimetry, the authors present evidence-based recommendations for criteria to detect earliest evidence of glaucomatous damage with perimetry. The authors will review different event- and trend-based criteria and present data with regard to comparative performance of such criteria. Relevance of using absolute versus corrected threshold data with regard to different criteria is also addressed. At the end, the authors provide practical guidelines for detection of visual field progression in a clinical setting and review issues related to clinical trials.


Subject(s)
Glaucoma/diagnosis , Vision Disorders/diagnosis , Visual Field Tests/instrumentation , Visual Fields , Disease Progression , Humans , Retinal Ganglion Cells/pathology
19.
Saudi J Ophthalmol ; 35(2): 112-116, 2021.
Article in English | MEDLINE | ID: mdl-35391815

ABSTRACT

PURPOSE: Trochleitis has been recognized as one of the causes of eye pain and migraine headaches. This study attempts to investigate the effect of ibuprofen on reducing eye pain and migraine headaches caused by trochleitis. METHODS: In this before-after clinical trial, out of 1100 clinically examined patients with eye pain and migraine symptoms, 33 patients were diagnosed with having trochleitis and trochleodynia confirmed by orbital magnetic resonance imaging images. Ibuprofen (400 mg/6-8 h) was prescribed to the subjects for 15-30 days. The main outcomes were a reduction in tenderness and pain that were evaluated 2 weeks, a month, and 6 months after the prescription. The data were analyzed by STATA (version 14) and using Wilcoxon and McNemar tests. RESULTS: The results revealed that 28 of the subjects (84.8%) experienced a significant reduction in tenderness 2 weeks after undergoing the treatment (P < 0.001). Standard deviation and average of headache scores before and after the treatment were 7.85 ± 1.75 and 0.64 ± 0.61 based on the visual analog scale. The difference between the pain scores before and after the treatment was statistically significant (P < 0.001). Clinical symptoms such as induration (P < 0.001), photophobia (P < 0.001), upward gaze (P < 0.001), and pain after reading (P < 0.001) were reduced significantly. Six months after the treatment, none of the mentioned symptoms was reported by the subjects. CONCLUSION: The findings revealed that noninvasive treatment (ibuprofen) has reduced eye pain, tenderness, and migraine headaches caused by trochleitis. What is important to mention is that trochleitis should be diagnosed properly.

20.
J Vitreoretin Dis ; 5(4): 337-344, 2021.
Article in English | MEDLINE | ID: mdl-37007600

ABSTRACT

Purpose: This study determines whether fluorescein angiography (FA) with a 250-mg dose of fluorescein (half dose) is equal in quality to the standard 500-mg dose of fluorescein (full dose) when using digital ultra-widefield (UWF) technology. Methods: In a randomized, prospective study using a UWF imaging system, FAs performed with half dose were compared with angiograms performed with full dose. Imaging studies were reviewed by 4 reviewers based on 6 characteristics: dye transit, macrovasculature, macula detail, microvasculature, leakage, and overall quality. The scores for macrovasculature, macula detail, microvasculature, and overall quality were converted to a fuzzy rating score to confirm results. Results: Seventy-nine FAs from 67 patients were reviewed for this study, including 12 patients who had both half-dose and full-dose FAs. Of all the factors studied, only microvasculature received a significantly different score between full dose and half dose that was confirmed by the fuzzy rating scale (3.79 vs 3.53; P = .04). Among those eyes that received both full and half dose, there was no significant difference in any of the 6 factors. Conclusions: In a UWF imaging system, aside from looking at fine microvascular abnormalities, the 250-mg dose of fluorescein provided similar results to a 500-mg dose. The images were not significantly different in overall quality.

SELECTION OF CITATIONS
SEARCH DETAIL