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1.
Cutan Ocul Toxicol ; 38(4): 330-337, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31060385

RESUMO

Purpose: To evaluate the safety and efficacy of repeated intravitreal dexamethasone implant (Ozurdex) injections administrated on an "as-needed" protocol for retinal vein occlusion patients with macular oedema, previously subjected to at least five anti-vascular endothelial growth factor (VEGF) injections with poor or no response. Methods: Prospective interventional case series of 13 branch retinal vein occlusion (BRVO) and 10 central retinal vein occlusion (CRVO) patients with persistent macular oedema (>250 µm) after at least five anti-VEGF injections. Exclusion criteria included: baseline visual acuity worse than 1.5 logMAR, previous intravitreal implant, history of vitreoretinal surgery, manifest glaucoma or ocular hypertension, epiretinal membrane, retinal neovascularization, massive retinal or macular ischaemia, vitreous haemorrhage or severe lens opacity, previous laser photocoagulation treatment. Each patient received an initial intraocular dexamethasone implant and the procedure was repeated at 6 months "as needed." Patients were followed up at months 2, 4, 6, 8, 10 and 12 with spectral domain optical coherence tomography and best corrected visual acuity measurements. Exclusion criteria included: baseline visual acuity worse than 1.5 logMAR, previous intravitreal implant, history of vitreoretinal surgery, manifest glaucoma or ocular hypertension, epiretinal membrane, retinal neovascularization, retinal or macular ischaemia, vitreous haemorrhage or severe lens opacity, previous laser photocoagulation treatment. Patients on topical or systemic corticosteroid therapy (during the last 3 months), and known steroid responders as well as diabetic patients were also excluded. Results: In the BRVO group, the mean central retinal thickness (CRT) and best corrected visual acuity (BCVA) significantly improved from 482.92 ± 139.99 µm (0.55 ± 0.12 logMAR) at baseline, to 369.31 ± 119.72 µm (0.43 ± 0.18 logMAR) at 6 months (p = 0.011/p = 0.019). At 12 months CRT was 295.82 ± 135.48 µm (p = 0.026) and BCVA 0.29 ± 0.17 logMAR (p = 0.002). Minimum CRT values were achieved at 3.45 months after the first injection, and 2.46 months after the second injection (197.00 ± 84.27 and 180.00 ± 76.89 µm, respectively). Best BCVA values were achieved at a mean of 4 ± 0.853 months after the first injection, and 4 months after the second injection (0.219 ± 0.129 and 0.222 ± 0.078 logMAR, respectively). In the CRVO group, neither the mean CRT nor BCVA improved significantly at 6 months: from 669.70 ± 203.20 µm (0.80 ± 0.231 logMAR) at baseline, to 586.20 ± 237.63 µm (0.740 ± 0.268 logMAR) at 6 months (p = 0.131/p = 0.333). At 12 months CRT was significantly improved: 549.90 ± 191.26 µm (p = 0.047), but BCVA lacked significant improvement: 0.690 ± 0.285 logMAR (p = 0.072). Minimum CRT values were achieved at a mean of 2 months after the first injection, and also 2 months after the second injection (261.60 ± 121.31 and 280.00 ± 177.43 µm, respectively). Best BCVA values were achieved at a mean of 2 months after the first injection, and 2 months after the second injection and were 0.390 ± 0.173 and 0.385 ± 0.233 logMAR, respectively. Cataract progression was a rare event (2/23 eyes), while transient steroid-induced ocular hypertension (5/23 eyes) was managed successfully with IOP-lowering medication Conclusion: Dexamethasone implant should be considered as an effective and safe alternative in patients with BRVO and CRVO who have failed anti-VEGF therapy. Shortening the re-injection interval especially for CRVO cases should be considered.


Assuntos
Anti-Inflamatórios/administração & dosagem , Dexametasona/administração & dosagem , Glucocorticoides/administração & dosagem , Oclusão da Veia Retiniana/tratamento farmacológico , Administração Oftálmica , Idoso , Idoso de 80 Anos ou mais , Implantes de Medicamento , Resistência a Medicamentos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores
2.
Int Ophthalmol ; 39(5): 1027-1035, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-29619650

RESUMO

PURPOSE: To describe the outcomes of endothelial keratoplasty (EK) for bullous keratopathy in eyes with a retained angle-supported anterior chamber intraocular lens (acIOL). METHODS: Among 263 consecutive EK procedures, 7 DMEK and 11 DSAEK procedures were identified in eyes with an acIOL and included in the present retrospective case series. Pre- and postoperative status including ocular history, anatomical outcome and complications as well as best-corrected visual acuity was evaluated. RESULTS: Ocular history included complicated cataract surgery (n = 11), ocular trauma (n = 4) and primary intracapsular cataract extraction (n = 3). Surgery-related complications included primary graft failure (n = 1), graft detachment (n = 1), endophthalmitis (n = 1) and allograft rejection (n = 1). A clear cornea at the final examination (14 ± 4 months) was observed in 14/18 (78%), while the visual outcome was limited due to significant ocular comorbidity in 9 out of 14 uncomplicated procedures. CONCLUSION: The presented short-term outcomes suggest that both DMEK and DSAEK are feasible in eyes with an angle-supported acIOL yielding an acceptable graft survival rate in the first postoperative year.


Assuntos
Afacia Pós-Catarata/cirurgia , Doenças da Córnea/cirurgia , Ceratoplastia Endotelial com Remoção da Lâmina Limitante Posterior/métodos , Lentes Intraoculares , Acuidade Visual , Adulto , Idoso , Idoso de 80 Anos ou mais , Câmara Anterior , Afacia Pós-Catarata/complicações , Doenças da Córnea/complicações , Doenças da Córnea/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
3.
BMC Ophthalmol ; 16: 102, 2016 Jul 08.
Artigo em Inglês | MEDLINE | ID: mdl-27390837

RESUMO

BACKGROUND: Beta-thalassemia is a severe genetic blood disorder caused by a mutation in the gene encoding for the beta chains of hemoglobin. Individuals with beta-thalassemia major require regular lifelong Red Blood Cell transfusions to survive. Ocular involvement is quite common and may have serious implications. METHODS: Extensive review of observational studies on beta-thalassemia, to determine the prevalence and spectrum of ocular abnormalities, by clinical examination and multimodal imaging, and to investigate risk factors for their development. RESULTS: Frequency of ocular involvement differs among various studies (41.3-85 %, three studies). Ocular findings in beta-thalassemia may correlate to the disease itself, iron overload or the chelating agents used. Beta-thalassemia ocular manifestations include ocular surface disease, as demonstrated by tear function parameters (two studies). Lens opacities are present in 9.3-44 % (five studies). Lenticular opacities and RPE degeneration correlated positively with use of desferrioxamine and deferriprone respectively (two studies). Ocular fundus abnormalities characteristic of pseudoxanthoma elasticum (PXE), including peau d'orange, angioid streaks, pattern dystrophy-like changes, and optic disc drusen are a consistent finding in seven studies. Patients with PXE-like fundus changes were older than patients without these fundus changes (two studies). Age (two studies) and splenectomy (one study) had the strongest association with presence of PXE-like fundus changes. Increased retinal vascular tortuosity independently of the PXE-like fundus changes was found in 11-17.9 % (three studies), which was associated with aspartate amino transferase, hemoglobin and ferritin levels (two studies). Fundus autofluorescence and electrophysiological testing (ERG and EOG) may indicate initial stages or more widespread injury than is suggested by fundus examination (two studies). CONCLUSIONS: Beta-thalassemia may present with various signs, both structural and functional. Pseudoxanthoma elasticum like fundus changes are a frequent finding in patients with b-thalassemia. These changes increase with duration or severity of the disease. Retinal vascular tortuosity may be an additional disease manifestation related to the severity and duration of anemia and independent of the PXE-like syndrome. Patients with long-standing disease need regular ophthalmic checkups because they are at risk of developing PXE-like fundus changes and potentially of subsequent choroidal neovascularization.


Assuntos
Doenças Retinianas/etiologia , Transtornos da Visão/etiologia , Talassemia beta/complicações , Quelantes/efeitos adversos , Humanos , Sobrecarga de Ferro/complicações , Estudos Observacionais como Assunto
4.
Cutan Ocul Toxicol ; 33(3): 173-80, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24156304

RESUMO

PURPOSE: To assess and compare the safety and the efficacy of VisThesia™ and Viscoat® in cataract surgery. METHODS: This prospective randomized clinical trial included 44 eyes of 44 patients that were assigned randomly to undergo phacoemulsification either with VisThesia™ or with Viscoat®. Preoperative data included age, gender, visual acuity, IOP and mean endothelial cell density. Postoperative, best corrected visual acuity (BCVA), IOP, mean endothelial cell density and painful sensation during surgery were recorded. RESULTS: BCVA, evaluated with Snellen chart in decimal fraction, was statistically improved in both groups. Specifically, mean BCVA in VisThesia group was increased from 0.28 ± 1.8 SD preoperatively to 0.83 ± 1.4 SD postoperatively, whereas, in the Viscoat group, BCVA was increased from 0.31 ± 2.1 SD preoperatively, to 0.85 ± 1.2 SD after surgery (p > 0.1). The mean postoperative IOP was lower in the VisThesia group, but the difference was not statistically significant (p > 0.1). Preoperatively, the mean endothelial cell count was 2322.3 ± 161.1 SD cells/mm(2) in Viscoat group and 2304.8 ± 142.8 SD cells/mm(2) in the VisThesia group, similar between groups (p > 0.1). At day 15 after cataract surgery the postoperative endothelial cell count was 2102.9 ± 182.8 SD cells/mm(2) in Viscoat group and 2032.6 ± 160.4 SD cells/mm(2) in the VisThesia group (p > 0.1). The mean endothelial cell decrease was 212 cells/mm(2) (9.1%) in the Viscoat group and 272 cells/mm(2) (11.8%) in the VisThesia group. The difference was not statistically significant between the two groups (t-test = 0.18, p > 0.1). This value is within standard normal endothelial cell decrease after a cataract surgery. Painful sensation was not reported during any stage of the procedure. CONCLUSIONS: Topical-intracameral anesthesia with VisThesia™ allows cataract surgery without any painful sensation in the majority of patients. Both Viscoat® and VisThesia™ have similar safety profile during intra- and post-operative period and identical endothelial protection, as endothelial cell loss is within normal limits.


Assuntos
Anestésicos Locais/uso terapêutico , Extração de Catarata , Sulfatos de Condroitina/uso terapêutico , Endotélio Corneano/efeitos dos fármacos , Ácido Hialurônico/uso terapêutico , Implante de Lente Intraocular , Lidocaína/uso terapêutico , Administração Tópica , Idoso , Combinação de Medicamentos , Células Endoteliais/citologia , Células Endoteliais/efeitos dos fármacos , Endotélio Corneano/citologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Equipamentos Cirúrgicos , Resultado do Tratamento , Acuidade Visual
6.
F1000Res ; 12: 1456, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38161427

RESUMO

Background: Ocular hypertension (OH) is a condition characterized by elevated intraocular pressure (IOP) exceeding the normal range, without any evident damage to the optic nerve or visual field defects characteristic of glaucoma. It constitutes a significant precursor to the development of glaucoma, a leading cause of irreversible vision loss worldwide. Emerging evidence has shown that microcirculation alterations in eyes with OH could serve as predicting factors to identify eyes at high risk for progression to glaucoma. In view of the above, the purpose of our study is to investigate microcirculation alterations of the radial peripapillary capillary plexus using optical coherence tomography angiography (OCT-A) in patients with ocular hypertension (OH). Methods: A total of 192 eyes were included in this observational, comparative, single-centre study and were divided in two groups: OH eyes and healthy controls. OCT-A was performed to analyze microcirculation characteristics at the peripapillary area. Radial peripapillary capillary density was measured at the total area of the optic disc and at each separate region (superior, inferior, inside). The parameters of age, medical treatment for ocular hypertension, sex and retinal fiber layer thickness were evaluated. Results: Total radial peripapillary capillary density was significantly lower in patients with OH than in healthy controls Concerning the microcirculation characteristics at each separate region of the peripapillary area, the results were as follows: inferior radial peripapillary capillary density was significantly decreased in individuals with OH than in controls, while measurements in the superior peripapillary area and internal optic disc were similar in both groups. Conclusions: Our study indicates decreased radial peripapillary capillary density in eyes with OH. Microcirculation alterations in the inferior peripapillary area could potentially comprise biomarkers for OH progression to glaucoma.


Assuntos
Glaucoma , Hipertensão Ocular , Humanos , Angiofluoresceinografia/métodos , Pressão Intraocular , Vasos Retinianos/diagnóstico por imagem , Tomografia de Coerência Óptica/métodos , Campos Visuais
7.
BMC Ophthalmol ; 11: 27, 2011 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-21933427

RESUMO

BACKGROUND: To report a case with hypotony due to late leakage of the filtering bleb performed during childhood and treated surgically using human pericardium graft. CASE PRESENTATION: A man with hypotony related to bleb's leakage in his right eye was presented. During his childhood trabeculectomy was performed to manage ocular hypertension due to pediatric glaucoma. Biomicroscopy revealed choroidal tissue incarcerated in the sclerectomy under the conjunctiva. Bleb revision was performed. Human pericardium graft was used to cover the sclerectomy and a new bleb with controlled outflow was created. The intraocular pressure (IOP) and Seidel test represent the main outcomes. Intraoperative and postoperative complications were recorded. Fifteen days postoperatively the IOP was of 7 mmHg and the bleb seemed to filter properly. Five months later the IOP was 9 mmHg and no complications were noticed. During the follow up time, the Seidel test was negative. CONCLUSION: We used human pericardium graft with no complications in a case of bleb leakage performed for pediatric glaucoma.


Assuntos
Vesícula/cirurgia , Glaucoma de Ângulo Aberto/cirurgia , Pericárdio/transplante , Retalhos Cirúrgicos , Trabeculectomia/efeitos adversos , Adulto , Vesícula/etiologia , Túnica Conjuntiva/cirurgia , Seguimentos , Humanos , Pressão Intraocular , Masculino , Complicações Pós-Operatórias , Reoperação , Esclera/cirurgia , Tonometria Ocular
8.
Cutan Ocul Toxicol ; 30(1): 80-3, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20958153

RESUMO

PURPOSE: To report our experience from a case with a retinal detachment in an eye with aphakia, an Artisan phakic anterior chamber lens, and an ExPress valve and describe its course after vitrectomy and gas tamponade. METHODS: Interventional case report. RESULTS: A 65-year-old man who had previously undergone cataract extraction, Artisan/Verisyse lens implantation, and ExPress valve insertion for the treatment of aphakia and refractory glaucoma presented with a superior retinal detachment. The patient underwent a 20-g pars plana 20g vitrectomy, cryotherapy, and sulfur hexafluoride (SF(6)) tamponade. Twenty days after vitrectomy, the Artisan lens remained in place and the retina attached. Twelve months postoperatively, the situation remained unchanged. CONCLUSION: Iris-claw lenses have been introduced in 2004 as an alternative option for the correction of aphakia. Vitreoretinal surgeons face a new therapeutic challenge since data with regard to retinal detachment repair in patients with Artisan lenses are very limited. In our case, all intraoperative vitrectomy manipulations were performed without difficulty through the Artisan lens, which remained stable during fluid-air exchange as well as postoperatively, despite the movements of the gas bubble and the presence of the ExPress valve. Moreover, there was no displacement of the ExPress valve during the intraoperative manipulations of vitrectomy or dysfunction of the valve due to the existence of the gas in the postoperative period.


Assuntos
Afacia Pós-Catarata/cirurgia , Implante de Lente Intraocular/instrumentação , Lentes Intraoculares , Descolamento Retiniano/cirurgia , Idoso , Segmento Anterior do Olho/cirurgia , Afacia Pós-Catarata/reabilitação , Extração de Catarata , Crioterapia , Humanos , Masculino , Complicações Pós-Operatórias , Descolamento Retiniano/etiologia , Hexafluoreto de Enxofre/administração & dosagem , Vitrectomia
9.
Cutan Ocul Toxicol ; 30(4): 251-62, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21428724

RESUMO

Since their introduction by Chang et al. in 1987, perfluorocarbon liquids (PFCLs) have become a useful tool in vitreoretinal surgery. They are synthetic compounds with carbon-fluorine chemical chains that have specific physico-chemical properties, which make them valuable for the intraoperative management of the retina by simplifying vitreoretinal surgical maneuvers in a variety of settings. These maneuvers include retinal detachments associated with proliferative vitreous retinopathy, following penetrating trauma, giant retinal tears, dislocated lenses or lens implants and complications from proliferative diabetic vitreoretinopathy. Purified PFCLs are generally considered to be biologically inert. Despite the stability of PFCLs during vitreoretinal surgery, several studies have indicated that these compounds may be associated with toxicity in ocular tissues. The purpose of this review is to report the use and toxicity of PFCLs in vitreoretinal surgery and to present the latest perspectives on modified PFCLs (hydrofluorocarbon liquids (HFCLs) and HFCL-oligomers).


Assuntos
Fluorocarbonos , Cirurgia Vitreorretiniana/métodos , Oftalmopatias/etiologia , Oftalmopatias/cirurgia , Fluorocarbonos/efeitos adversos , Fluorocarbonos/uso terapêutico , Humanos , Cuidados Intraoperatórios , Soluções Oftálmicas
10.
BMC Ophthalmol ; 10: 30, 2010 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-21126377

RESUMO

BACKGROUND: To report the rare association of peripheral retinal ischemia in a patient with Waldenström's macroglobulinemia. CASE PRESENTATION: A 39-year old man with a recent diagnosis of asymptomatic Waldenström's macroglobulinemia (WM) was referred from his physician for ocular evaluation. The fundus examination in his right eye (RE) revealed very mild central vein dilation, while retinal hemorrhages associated with microaneurismal alterations of the vascular plexus were detected at the temporal periphery. Fluoroscein angiography of his RE revealed an extended area of capillary dropout distal to the microaneurismal lesions. In our patient with WM an extensive area of capillary non-perfusion, in the absence of severe involvement of the posterior pole was documented; this association to the best of our knowledge has never been reported before. CONCLUSION: Although the incidence of the disease is rare, meticulous examination of the retinal periphery should be performed in all patients with WM and vice versa the differential diagnosis of peripheral retinal ischemia of unknown origin should include an investigation to rule out asymptomatic Waldenström's macroglobulinemia.


Assuntos
Capilares , Isquemia/etiologia , Vasos Retinianos , Macroglobulinemia de Waldenstrom/complicações , Adulto , Aneurisma/diagnóstico , Aneurisma/etiologia , Atrofia , Corioide/patologia , Diagnóstico Diferencial , Angiofluoresceinografia , Fóvea Central/patologia , Humanos , Isquemia/diagnóstico , Isquemia/fisiopatologia , Masculino , Retina/patologia , Hemorragia Retiniana/etiologia , Epitélio Pigmentado da Retina/patologia , Macroglobulinemia de Waldenstrom/diagnóstico
11.
Cutan Ocul Toxicol ; 29(4): 288-92, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20860494

RESUMO

OBJECTIVE: To evaluate the efficacy of sulfur hexafluoride tamponade, as an adjunct to vitrectomy and internal-limiting-membrane peeling, for the treatment of retinal detachment (RD) associated with macular hole (MH). MATERIALS AND METHODS: Our study was a retrospective interventional case series. We evaluated 9 phakic eyes of 9 consecutive patients with retinal detachment secondary to macular hole (MHRD) treated with 20-gauge (g) pars plana vitrectomy, which was followed with trypan blue-assisted internal-limiting-membrane peeling, fluid-air exchange, and 20% sulfur hexafluoride tamponade (SF(6)) gas exchange. All patients underwent optical coherence tomography, best-corrected visual acuity (BCVA) measurement, and dilated fundus examination with indentation, pre- and postoperatively. RESULTS: The mean (± standard deviation) follow-up time was 13 ± 3 months (range 9-18). Postoperatively, all eyes demonstrated an attached retina, whereas MH closure was achieved in only 1 eye, and in a second eye after additional injection of gas and further posturing. The BCVA improved from 2.2 ± 0.4 logMAR (logarithm of the minimum angle of resolution) at baseline to 2.0 ± 0.5 logMAR at the end of follow-up (p = .05). CONCLUSION: The failure in MH closure in most of our cases strengthens the view that short-term tamponade with SF(6) may not suffice for achieving MH closure, and either prolonged tamponade (with C(3)F(8) or silicone oil) or additional photocoagulation may be a better option for eyes with MHRDs. In addition, it is possible that intravitreal injection of gas might be an option for the treatment of persistent MHs after vitrectomy for MHRD, especially when the MH is small. Further studies are required to evaluate the above findings, although the implementation of large series studies remains a challenge because of the rarity of cases with MHRDs.


Assuntos
Membrana Epirretiniana/cirurgia , Descolamento Retiniano/terapia , Perfurações Retinianas/terapia , Hexafluoreto de Enxofre/uso terapêutico , Vitrectomia/métodos , Adulto , Idoso , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Descolamento Retiniano/etiologia , Descolamento Retiniano/patologia , Perfurações Retinianas/complicações , Perfurações Retinianas/patologia , Estudos Retrospectivos , Hexafluoreto de Enxofre/administração & dosagem , Resultado do Tratamento
12.
Semin Ophthalmol ; 33(3): 313-317, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-27935338

RESUMO

PURPOSE: To identify the prognostic factors affecting the surgical outcomes in patients with vitreomacular traction syndrome undergoing pars plana vitrectomy. METHODS: This was a retrospective clinical study of 67 eyes of 67 patients with vitreomacular traction syndrome who underwent pars plana vitrectomy. Demographic, clinical, and optical coherence tomography (OCT) characteristics were collected and analyzed. Univariate and multivariate linear regression analysis were used to examine the effect of parameters on change in best-corrected visual acuity (BCVA). RESULTS: At a mean follow-up period of 15.9±12 months (mean±SD), the BCVA improved from 0.7±0.3 LogMAR (mean±SD) to 0.5±0.3. Seven patients developed full-thickness macular hole intraoperatively and tamponade (air, 20% SF6 or 12% C3F8) was used in 41 patients. Retinal breaks were identified intraoperatively in four patients. Regression analysis demonstrated that the preoperative BCVA was the only parameter affecting the postoperative visual outcome. CONCLUSION: In the present study, the preoperative BCVA plays a predictive role in the surgical outcome of patients with VMT undergoing pars plana vitrectomy. No other preoperative OCT characteristics demonstrated prognostic potential. Further prospective studies are needed in order to examine the role of several factors that could potentially facilitate preoperative patient counselling.


Assuntos
Perfurações Retinianas/cirurgia , Vitrectomia/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Análise de Regressão , Estudos Retrospectivos , Tomografia de Coerência Óptica , Acuidade Visual
13.
Ther Clin Risk Manag ; 13: 1443-1447, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29089772

RESUMO

PURPOSE: To describe the utilization of descemetorhexis for reformation of the anterior chamber in eyes with central iridocorneal synechiae before endothelial keratoplasty (EK). METHODS: A 71-year-old man with a history of trabeculectomy complicated by hypotony presented with bullous keratopathy in the presence of extensive iridocorneal synechiae and a flat anterior chamber. In order to proceed with EK, synechiolysis with the use of viscoelastic and scissors was attempted. Despite successful dissection of the peripheral strands, the pupillary margin of the iris remained attached to the endothelium. Therefore, descemetorhexis was performed to detach the Descemet membrane along with central synechiae and create sufficient space for safe EK at a later stage. RESULTS: Corneal clarity was restored by ultrathin Descemet stripping automated endothelial keratoplasty, leaving a fibrous membrane in the pupillary plane, which was excised 2 months later, allowing an improvement of best-corrected visual acuity to 0.5. CONCLUSION: Isolated descemetorhexis was successfully employed to reform the anterior chamber and proceed with EK in a case of bullous keratopathy and resistant iridocorneal synechiae. This stepwise approach may be considered in similar cases in order to avoid a more invasive treatment, ie, penetrating keratoplasty and synechiolysis.

14.
Clin Interv Aging ; 11: 651-7, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27274213

RESUMO

PURPOSE: The aim of this study was to compare the results of phacoemulsification through a small pupil using minimal iris manipulation versus phacoemulsification through a well-dilated pupil. METHODS: This prospective randomized control (comparative) study comprised 78 patients (group I) with a maximally dilated pupil size of ≤4.00 mm and 45 patients (group II) with dilated pupil size of ≥7.00 mm. In group I patients, only viscodilation and minimal push-and-pull iris stretching with two collar-button iris-retractor hooks were utilized without iris manipulation. Phacoemulsification was performed by two senior surgeons and the technique used consisted of either stop and chop or quick chop, infusion/aspiration of lens cortex, capsular bag refill with ocular viscoelastic devices, and implantation of an acrylic foldable intraocular lens. Patients were examined on the first day and 1 month postoperatively. RESULTS: Forty-six eyes of group I patients had pseudoexfoliation syndrome, eleven eyes had previous glaucoma surgery, 14 eyes had angle-closure or open-angle glaucoma, and seven eyes had posterior synechiae with iritis. In group I patients, the mean pupil size measured under an operating microscope was 3.2 mm preoperatively, 4.3 mm after viscoelastic and mechanical pupil dilation, and 4.1 mm at the end of a surgical procedure. Rupture of the zonular fibers occurred in six patients of group I and the intraocular lens was implanted in the sulcus. Small iris-sphincter rupture and small hemorrhages occurred in four eyes during pupillary manipulation, but they were not evident at the end of the surgery. In group II patients, no intraoperative complications occurred. Signs of significant corneal edema and iritis were observed more frequently in group I eyes (26 eyes and 20 eyes, respectively) on the first postoperative day in comparison with group II eyes (ten eyes and six eyes, respectively). Intraocular pressure was <20 mmHg in all eyes of both groups. One month postoperatively, the pupil was round and reactive to light, the anterior chamber was quiet, and the cornea was clear in all eyes. The best-corrected visual acuity on Snellen chart was 20/40 (Monoyer's scale) or better in both groups. CONCLUSION: Phacoemulsification through a small pupil using minimal iris manipulation can be safe and exhibits the same results as those obtained with phacoemulsification through normal pupils.


Assuntos
Catarata/terapia , Iris/cirurgia , Implante de Lente Intraocular/métodos , Facoemulsificação/métodos , Pupila , Acuidade Visual , Idoso , Idoso de 80 Anos ou mais , Síndrome de Exfoliação/complicações , Feminino , Glaucoma de Ângulo Aberto/complicações , Grécia , Humanos , Pressão Intraocular , Complicações Intraoperatórias , Irite/complicações , Implante de Lente Intraocular/efeitos adversos , Masculino , Pessoa de Meia-Idade , Facoemulsificação/efeitos adversos , Estudos Prospectivos
15.
Clin Ophthalmol ; 10: 2477-2484, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-28003737

RESUMO

PURPOSE: The aim of the study was to assess the influence of central corneal thickness (CCT) and corneal curvature in tonometry measurements taken by Goldmann applanation tonometry (GAT) and Pascal dynamic contour tonometry (DCT). METHODS: This was a prospective study of 185 eyes from 97 subjects, attending outpatient ophthalmology appointments, who underwent intraocular pressure measurements by GAT and Pascal DCT. CCT and corneal curvature were obtained using ultrasound pachymetry and Orbscan topography, respectively. All measurements were carried out among males and females during the period 2009-2012. Apart from the usual descriptive and exploratory data analysis, one-way analysis of variance and agreement analysis were performed, linear as well as intraclass correlation coefficients were estimated, and multiple scatter and Bland-Altman plots were produced. RESULTS: Mean IOP measurements obtained were 17.21±4.10 mmHg by DCT and 13.23±4.07 mmHg by GAT. Mean difference between the GAT and DCT measurements was 3.88±2.8 mmHg. Mean CCT and corneal curvature were 522.78±52 µm and 43.83±2.9823 D, respectively. CONCLUSION: Intraocular pressure measured by GAT was consistently lower when compared with DCT, and this difference was greatest with thinner CCT. Flat corneas seem to influence GAT measurements compared to DCT.

16.
J Glaucoma ; 25(12): 931-938, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27782956

RESUMO

OBJECTIVE: To determine subtle changes of Heidelberg retina tomography (HRT) stereometric parameters and blue-on-yellow (B/Y) perimetry global indices for the early diagnosis of glaucoma in suspected subjects. PATIENTS AND METHODS: Cross-sectional data on 174 eyes of 87 subjects from a larger cohort, attending the Glaucoma Department of the "G. Gennimatas" General Hospital of Athens from January 2004 to February 2014, were used in the study. Subjects were assigned to 3 groups: (a) "normals" not requiring treatment throughout the study (group 1), (b) suspects who developed glaucoma and required treatment during the study (group 2), and (c) patients with incipient glaucoma (group 3). Specific HRT and B/Y perimetry variables were compared among the 3 groups. RESULTS: Significant differences were established for the following HRT parameters: "reference height" differed significantly between groups 1 and 2 and groups 1 and 3; "cup shape measure" differed significantly between groups 1 and 2 and groups 2 and 3. B/Y perimetry global index "mean deviation" significantly distinguished group 2 from groups 1 and 3. CONCLUSIONS: The results of the present study suggest the predictive value of the HRT stereometric parameters "reference height" and "cup shape measure" and of the B/Y perimetry global index "mean deviation" in glaucoma-suspected subjects; further corroboration through longitudinal studies is warranted.


Assuntos
Glaucoma/diagnóstico , Pressão Intraocular , Disco Óptico/patologia , Tomografia/métodos , Testes de Campo Visual/métodos , Campos Visuais/fisiologia , Adulto , Idoso , Estudos Transversais , Feminino , Glaucoma/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes
18.
Biomed Res Int ; 2015: 574086, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26078956

RESUMO

Breast cancer is one of the most common malignant diseases occurring in women, and its incidence increases over the years. It is the main site of origin in ocular metastatic disease in women, and, due to its hematogenous nature of metastatic spread, it affects mainly the uveal tissue. The purpose of this paper is to summarize the clinical manifestations of the breast cancer ocular metastatic disease, alongside the side effects of the available treatment options for the management and regression of the systematic and ophthalmic disease.


Assuntos
Neoplasias da Mama/patologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/fisiopatologia , Neoplasias Oculares/patologia , Neoplasias da Mama/tratamento farmacológico , Neoplasias Oculares/secundário , Feminino , Humanos
19.
J Ophthalmol ; 2015: 836269, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26171243

RESUMO

Purpose. To compare the outcomes of trabeculectomy with and without Healaflow (Anteis S.A, Geneva, Switzerland), a high molecular weight viscoelastic gel, in patients requiring glaucoma surgery. Methods. This was a retrospective, comparative, interventional case-control study. Forty patients formed two matched study groups and were analyzed (trabeculectomy alone (control) versus trabeculectomy with Healaflow (study)). Results. The postoperative levels of mean IOP were statistically significantly lower (P < 0.05) than preoperatively in both groups, for all time intervals. There was no statistical difference, at the end of the follow-up period, between the two groups in the mean values of the IOP (14.9 ± 3.2 mmHg for the study group versus 14.8 ± 3.3 mmHg for the control group). The number of antiglaucoma drugs used in the study group was reduced from a preoperative mean of 3.4 ± 0.75 to a 6-month postoperative mean of 0.6 ± 0.8 (P < 0.001) and in the control group from 3.6 ± 0.59 to 0.55 ± 0.9 (P < 0.001). Conclusions. Although trabeculectomy with Healaflow appears to be a safe procedure, we failed to identify any significant advantages in the use of Healaflow when compared with trabeculectomy alone, at the end of the 6-month follow-up period.

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