Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 38
Filtrar
1.
HIV Med ; 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38725328

RESUMO

BACKGROUND: People living with HIV are disproportionately represented among people with severe mpox. Mild and self-limiting conjunctival involvement has been well-documented, and severe ocular complications, including keratitis, corneal scarring, and the associated loss of vision, are increasingly recognized. Tecovirimat is the first-line antiviral therapy for severe mpox, but data around the efficacy of systemic antiviral agents for mpox are limited, particularly in cases of ocular mpox. CASE REPORT: Here, we describe a case of sight-threatening necrotic blepharokeratoconjunctivitis in a person with advanced HIV, requiring an extended course of tecovirimat due to persistent mpox viral shedding for nearly 5 months.

4.
Eye (Lond) ; 38(1): 76-81, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37355756

RESUMO

OBJECTIVES: To investigate patient understanding of, and attitudes to, premium (toric, extended depth of focus/multifocal) intraocular lenses (premIOLs) in public health sector patients undergoing cataract surgery (CS) in the UK. METHODS: A 12 question survey with Likert scale questions was designed, to assess patient attitudes to post-operative spectacle dependence, refractive target and desirability of spectacle independence whilst considering possible complications of dysphotopsias and need for premIOL exchange/adjustment. RESULTS: 360 surveys were collected. CS had not been performed in 66.5%. Separate spectacles were worn for reading and distance in 28.8%, 19.2% had varifocals, 11.2% bifocals, 22.9% reading glasses only and 1.6% computer glasses only. Contact lenses were not worn in 95.7%. Only 41.6% were drivers. Most patients (85.8%) did not mind wearing glasses after CS, with 78.9% preferring reading glasses, compared with 29.7% preferring distance glasses. Most patients (75.3%) were not familiar with premIOLs, with 58.9% not willing to consider them in the context of a 2% risk of debilitating dysphotopsia and 54.2% rejecting a 5% risk of second surgery. CONCLUSIONS: There is a lack of awareness of premIOLs in public health sector (NHS) patients in the UK, suggesting limitations in the "fully informed" consent process for CS. Most NHS CS patients are currently willing to wear spectacles after CS, especially reading glasses. There is reluctance in such patients to consider premIOLs on a background of small risks of debilitating dysphotopsias and increased risks of a second operation.


Assuntos
Extração de Catarata , Catarata , Lentes Intraoculares , Humanos , Saúde Pública , Acuidade Visual
5.
Int J Ophthalmol ; 16(7): 1084-1092, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37465507

RESUMO

AIM: To evaluate corneal astigmatic outcomes of femtosecond laser-assisted arcuate keratotomies (FAKs) combined with femtosecond-laser assisted cataract surgery (FLACS) over 12mo follow-up. METHODS: Totally 145 patients with bilateral cataracts and no ocular co-morbidities were recruited to a single-centre, single-masked, prospective randomized controlled trial (RCT) comparing two monofocal hydrophobic acrylic intraocular lenses. Eyes with corneal astigmatism (CA) of >0.8 dioptres (D) received unpaired, unopened, surface penetrating FAKs at the time of FLACS. Visual acuity, subjective refraction and Scheimpflug tomography were recorded at 1, 6, and 12mo. Alpins vectoral analyses were performed. RESULTS: Fifty-one patients (61 eyes), mean age 68.2±9.6y [standard deviation (SD)], received FAKs. Sixty eyes were available for analysis, except at 12mo when 59 attended. There were no complications due to FAKs. Mean pre-operative CA was 1.13±0.20 D. There was a reduction of astigmatism at all post-operative visits (residual CA 1mo: 0.85±0.42 D, P=0.0001; 6mo: 0.86±0.35 D, P=0001; and 12mo: 0.90±0.39, P=0.0001). Alpins indices remained stable over 12mo. Overall, the cohort was under-corrected at all time points. At 12mo, 61% of eyes were within ±15 degrees of pre-operative astigmatic meridian. CONCLUSION: Unpaired unopened penetrating FAKs combined with on-axis phacoemulsification are safe but minimally effective. CA is largely under-corrected in this cohort using an existing unmodified nomogram. The effect of arcuate keratotomies on CA remained stable over 12mo.

6.
Eye (Lond) ; 37(18): 3751-3756, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37277612

RESUMO

BACKGROUND: To compare productivity of National Health Service cataract lists performing unilateral cataract (UC) surgery vs Immediate Sequential Bilateral Cataract Surgery (ISBCS). METHODS: Five 4-hour lists with ISBCS cases and five with UC were observed using time and motion studies (TMS). Individual tasks and timings of each staff member in theatre was recorded by two observers. All operations were performed by consultant surgeons under local anaesthesia (LA). RESULTS: Median number of eyes operated per 4-hour list was 8 (range 6-8) in the ISBCS group and 5 (5-7) in the UC group (p = 0.028). Mean total theatre time (defined as time between the entry of the first patient and the exit of the last patient from theatre) was 177.12 (SD 73.62) minutes in the ISBCS group and 139.16 (SD 47.73) minutes in the UC group (p = 0.36). Mean time to complete two consecutive unilateral cataract surgery operations was 48.71 minutes compared to 42.23 minutes for a single ISBCS case (13.30% time saved). Based on our collected TMS data, a possible 5 consecutive ISBCS cases and 1 UC (total 11 cataract surgeries) could be performed during a four-hour theatre session, with a theatre utilisation quotient of 97.20%, contrasting to nine consecutive UC, with a theatre utilisation quotient of 90.40%. DISCUSSION: Performing consecutive ISBCS cases under LA on routine cataract surgery lists can increase surgical efficiency. TMS are a useful way to investigate surgical productivity and test theoretical models for efficiency improvements.


Assuntos
Extração de Catarata , Catarata , Humanos , Medicina Estatal , Estudos de Tempo e Movimento , Olho
7.
Cornea ; 42(4): 507-519, 2023 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-36525340

RESUMO

ABSTRACT: Emerging monoclonal antibody therapies are assuming greater importance in the management of severe and refractory forms of immunity-driven and oncological disorders. However, some have been found to induce adverse ocular events (AOEs) leading to discontinuation of treatment or additional multidisciplinary management. We present the current knowledge concerning AOEs associated with 3 monoclonal antibody therapies: dupilumab, tralokinumab, and belantamab mafodotin. We examine the manifestations of their AOEs, proposed pathophysiological mechanisms, and current treatment recommendations. We identified and reviewed all studies for dupilumab, tralokinumab, and belantamab mafodotin using the keywords "dupilumab," "tralokinumab," "belantamab mafodotin," "conjunctivitis," and "keratopathy" from January 2016 to November 2021. Conjunctivitis was the most frequently reported AOE in patients with atopic dermatitis receiving dupilumab or tralokinumab. Mild cases were managed with warm compresses for associated meibomian gland dysfunction, artificial tears, and antihistamine/mast cell stabilizer eye drops. In more severe cases, additional anti-inflammatory therapy, with corticosteroid eye drops or ointments, or topical calcineurin inhibitors-such as tacrolimus or ciclosporin-were required. Patients with resistant or refractory multiple myeloma treated with belantamab mafodotin often developed keratopathy, which could necessitate contact lens fitting, or for cycles of belantamab mafodotin to be delayed.


Assuntos
Anticorpos Monoclonais , Conjuntivite , Humanos , Incidência , Anticorpos Monoclonais/efeitos adversos , Conjuntivite/induzido quimicamente , Soluções Oftálmicas/efeitos adversos
8.
Eye (Lond) ; 37(3): 440-445, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-35115718

RESUMO

BACKGROUND/OBJECTIVES: During the COVID-19, elective cataract surgery (CS) was significantly curtailed. We investigated whether consequent reduction of micro-surgical skills practice might lead to higher operative complications. METHODS: Single-centre, electronic note review of consecutive patients undergoing CS during three periods: 1st February 2019 to 13th January 2020 (P1) prior to pandemic; 3rd June 2020 to 11th January 2021 after 1st lockdown (P2); and 25th January to 30th July 2021 (P3) after/during second lockdown. RESULTS: 2276 operations occurred during P1, 999 during P2, 846 during P3. During P1, posterior capsular rupture (PCR) rate was 1.67%, similar to P2 (1.30%, p = 0.54), but lower than P3 (3.55%, p = 0.002). There was no difference in PCR risk percentage scores between routine and PCR cases during P1 (1.90% vs 2.03%, p = 0.83), P2 (2% vs 2.18%, p = 0.18), or P3 (1.87% vs. 2.71%, p = 0.08). During P2 and P3, there was a higher rate of cystoid macular oedema (CMO) compared with P1 (4.9% and 6.86% vs. 1.93%, p = 0.0001), with no differences in proportion of diabetics or cases with CMO in combination with PCR. There was no difference in surgeons grade experiencing PCR. CONCLUSIONS: In P3 following 9 months of curtailed elective CS, PCR rates were increased across all surgeon grades, occurring in cases with similar risk percentage scores. CMO rates were increased during COVID and not related to proportion of diabetics or increased PCR rates. The reduction in elective CS during the pandemic was associated with more complications, perhaps due to attenuation of microsurgical skills.


Assuntos
COVID-19 , Catarata , Edema Macular , Humanos , Edema Macular/etiologia , Pandemias , COVID-19/complicações , Controle de Doenças Transmissíveis , Catarata/complicações
9.
Surv Ophthalmol ; 66(1): 20-40, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33065176

RESUMO

Corneal transplantation is the most commonly performed human tissue transplantation procedure worldwide. Because of the large number of transplants, corneal graft failure has become one of the most common indications for corneal transplantation. The relatively recently developed lamellar transplant techniques have brought about specific potential complications leading to graft failure that may require different approaches to repeat transplantation other than penetrating keratoplasty. On the other hand, these new lamellar techniques also provide novel ways of rescuing failed penetrating grafts, with potential advantages over successive penetrating keratoplasties, such as reduced intraoperative risks and faster visual rehabilitation. We summarize the incidence and risk factors of graft failure for penetrating and lamellar (stromal and endothelial) corneal transplants and discuss the various surgical alternatives currently available to rescue such failed grafts, with a focus on the reported outcomes and limitations.


Assuntos
Doenças da Córnea , Transplante de Córnea , Doenças da Córnea/cirurgia , Transplante de Córnea/métodos , Humanos , Ceratoplastia Penetrante/efeitos adversos , Ceratoplastia Penetrante/métodos , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Transtornos da Visão
11.
J Cataract Refract Surg ; 46(7): 986-994, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32271271

RESUMO

PURPOSE: To compare the Clareon IOL with the Tecnis PCB00 IOL in terms of visual performance, refractive outcomes, glistenings occurrence, and quality-of-life outcomes. SETTING: Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom. DESIGN: Single-center, single-masked, prospective, randomized controlled trial. METHODS: One hundred thirty-nine patients with bilateral cataracts were randomized to receive the Clareon (C IOL) or Tecnis (T IOL) IOL. Visual acuity, refraction, central corneal thickness (CCT), endothelial cell loss, contrast sensitivity, mesopic gap acuity, evaluation of glistenings, and rates of perioperative and postoperative complications were recorded. Quality-of-life outcomes were measured with the EuroQOL-5 dimensions questionnaire and the patient-reported outcome measures (PROMs) questionnaire. Optimized A-constants were available for the T IOL but not for the C IOL. RESULTS: Seventy-one patients (140 eyes) received the C IOLs and 68 patients (134 eyes) received the T IOLs. Data were analyzed for the first implanted eye. At 12 months, mean uncorrected distance visual acuity (logarithm of the minimum angle of resolution) was 0.02 ± 0.10 and 0.01 ± 0.08 (mean ± SD; P = .49; 95% CI, -0.02 to 0.04) in the C IOL and T IOL groups, respectively. Corrected distance visual acuity was -0.02 ± 0.09 and -0.03 ± 0.06, respectively (P = .45; 95% CI, -0.02 to 0.04). The increase in CCT was 14 ± 19 and 16 ± 28 µm, respectively (P = .63; 95% CI, -10.16 to 6.16). Mean absolute refraction spherical equivalent error from target refraction was 0.41 ± 0.28 for the C IOL and 0.25 ± 0.2 for the T IOL groups (P = .002; 95% CI, 0.08 to 0.24). Glistenings were minimal (median grade 0), with no difference in grades between groups (P = .2). PROMs improved postoperatively and were similar in both groups. CONCLUSIONS: There were no differences in visual outcomes between the Clareon IOL and Tecnis PCB00 IOL. Glistenings were rarely observed in either IOL with no difference in grades. There was no difference in perioperative or postoperative complications. Surgeon optimization of the A-constant for the Clareon IOL is recommended.


Assuntos
Lentes Intraoculares , Facoemulsificação , Sensibilidades de Contraste , Humanos , Implante de Lente Intraocular , Estudos Prospectivos , Reino Unido , Acuidade Visual
12.
J Refract Surg ; 34(11): 718-725, 2018 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-30428091

RESUMO

PURPOSE: To determine the feasibility of a novel intraocular lens (IOL) designed to improve retinal image quality at up to 10° of retinal eccentricity and optionally provide retinal magnification in patients with macular disease. METHODS: In this prospective, interventional pilot study, 8 eyes of 7 patients with bilateral dry age-related macular degeneration and 1+ or less cataract underwent phacoemulsification and capsular bag implantation of a single, injectable, hydrophobic acrylic IOL. Safety and efficacy were assessed by monitoring logMAR corrected distance and near visual acuity, intraocular pressure, specular microscopy, 80-point visual field testing, and anterior segment and macular optical coherence tomography at baseline and 1 week, 1 month, and 2 months postoperatively. Microperimetry was undertaken at baseline and 1 and/or 2 months postoperatively. Reading performance was assessed at baseline and 1 month postoperatively using the Minnesota low vision reading chart (MNREAD; Precision Vision, LaSalle, IL). RESULTS: Safety outcomes were equivalent to standard monofocal IOLs. Visual acuities improved in all patients. Mean corrected distance visual acuity improved from 0.93 ± 0.22 preoperatively to 0.59 ± 0.25 at 2 months postoperatively. Mean reading speed increased from 28 ± 19 to 44 ± 31 words per minute. Mean microperimetry threshold sensitivities increased from 8.2 ± 4.6 to 12 ± 5.6 dB. Mean percentage of fixation points within a 4° circle increased from 77% ± 17% to 91% ± 11% with evidence for progressive movement of preferred retinal loci away from areas of geographic atrophy. CONCLUSIONS: Initial results indicate this novel IOL has a safety profile comparable with standard IOLs. Visual benefits may exceed those obtained with existing technologies in patients with macular disease. Further work is required to determine the full potential of extended macular vision technology. [J Refract Surg. 2018;34(11):718-725.].


Assuntos
Atrofia Geográfica/fisiopatologia , Implante de Lente Intraocular , Lentes Intraoculares , Pseudofacia/fisiopatologia , Retina/fisiopatologia , Visão Ocular/fisiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Catarata/fisiopatologia , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Facoemulsificação , Projetos Piloto , Estudos Prospectivos , Desenho de Prótese , Refração Ocular/fisiologia , Tomografia de Coerência Óptica , Acuidade Visual/fisiologia
13.
Ophthalmol Retina ; 2(9): 900-905, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-31047222

RESUMO

PURPOSE: To determine the visual outcomes of the EyeMax Mono intraocular lens (IOL) technology (London Eye Hospital Pharma, London, UK), which is a foldable and injectable hydrophobic acrylic IOL implanted as an add-on solution in pseudophakic eyes with age-related macular degeneration, in a pilot study. DESIGN: A prospective, interventional case series. PARTICIPANTS: A total of 22 pseudophakic eyes (11 patients) with bilateral severe or intermediate dry age-related macular degeneration (AMD) (13 eyes) or stable wet AMD or disciform scarring (9 eyes) meeting the criteria for sulcal IOL implantation. METHODS: Both eyes of participating subjects underwent small-incision ciliary sulcal implantation of a hyperaspheric, soft hydrophobic acrylic intraocular lens designed to improve the quality of the retinal image in all areas of the macula ≤10° from fixation and to generate a moderate hypermetropic correction for magnification. MAIN OUTCOME MEASURES: The primary outcome was safety as determined by intra- and postoperative complications, raised intraocular pressure requiring medical or surgical intervention, postoperative diplopia, reduction in visual field, and loss of ≥2 lines of visual acuity. Secondary outcomes were improvements in subjective and objective visual acuity (logarithm of the minimum angle of resolution). RESULTS: No intraoperative complication occurred. Elevated intraocular pressure values were measured directly after the operative procedure in 2 eyes (25 mmHg and 27 mmHg) and at the 1-week postoperative visit in 1 eye (22 mmHg) but not later. The mean postoperative spherical equivalent of refraction changed to +2.5 diopters, and all eyes had gained ≥2 lines of visual improvement (corrected distance visual acuity) by 6 months after surgery. Corrected near visual acuity as well as corrected distance visual acuity improved over time, suggesting a neuroadaptive component to improved visual function with the device. Devices were implanted bilaterally in all patients, and there were no reported symptoms of dysphotopsia or diplopia. CONCLUSIONS: Safety concerns were not identified in the short-term or medium term. These results indicate the potential of the EyeMax Mono IOL to improve near and distance visual acuity in pseudophakic eyes with intermediate to severe AMD.

14.
Eur J Ophthalmol ; 28(2): 198-203, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28983894

RESUMO

PURPOSE: To determine safety and visual outcomes in eyes with age-related macular degeneration (AMD) implanted with a novel intraocular lens (IOL) that delivers an optimized retinal image to all macular areas within 10 degrees of retinal eccentricity. METHODS: This was a consecutive case series of 244 eyes with dry/stable wet AMD and logMAR visual acuity ≥0.3 implanted with iolAMD Eyemax monoTM (London Eye Hospital Pharma), a single-piece, injectable, hydrophobic acrylic IOL sited in the capsular bag. Primary outcome was safety. Secondary outcomes were changes in corrected distance visual acuity (CDVA) and corrected near visual acuity (CNVA) (logMAR). RESULTS: Mean age at surgery was 80 years. Mean duration of follow-up was 3 months (range 1-16 months). No eyes had worsening of CDVA. Frequency of perioperative complications was equivalent to standard IOL implantation. Postoperative refractive outcomes were within ±1 D of the target refraction in 88% of cases. Mean preoperative CDVA improved from 1.06 to 0.71 postoperatively (mean of differences -0.35; 95% confidence interval [CI] -0.3886 to -0.3223; p<0.0001), equating to an approximate Early Treatment Diabetic Retinopathy Study gain of 18 letters. Mean preoperative CNVA (N-point; logMAR conversion) improved from 1.36 to 0.88 postoperatively (mean of differences -0.48; 95% CI -0.53 to -0.44; p<0.0001). CONCLUSIONS: This novel IOL appears safe in the short to medium term. Improvements in postoperative CDVA and CNVA exceed those observed with standard implants.


Assuntos
Catarata/complicações , Atrofia Geográfica/complicações , Implante de Lente Intraocular , Facoemulsificação , Acuidade Visual/fisiologia , Degeneração Macular Exsudativa/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Catarata/fisiopatologia , Feminino , Atrofia Geográfica/fisiopatologia , Humanos , Lentes Intraoculares , Londres , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Pseudofacia/fisiopatologia , Retina/fisiologia , Degeneração Macular Exsudativa/fisiopatologia
15.
Cornea ; 37(1): 28-32, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29040118

RESUMO

PURPOSE: To determine whether there is an association between socioeconomic status and best-corrected visual acuity (BCVA) in patients undergoing corneal transplantation in the United Kingdom. METHODS: Retrospective cohort study of 4306 patients registered on the national United Kingdom Transplant Registry and undergoing penetrating keratoplasty, anterior lamellar keratoplasty, or endothelial keratoplasty in 2002, 2008, and 2013. Socioeconomic status was determined by applying a validated deprivation index to generate a score based on 5 categories. Patients' demographic details, preoperative BCVA, copathology, surgical center volume, and socioeconomic status were analyzed for univariate effects of categorical and continuous variables. Binary logistic regression was used to determine whether preoperative BCVA was affected by socioeconomic status after adjusting for other factors. RESULTS: A larger percentage of the most deprived group was female in each period compared with the least deprived, but this was only significant in 2002 (48.7% vs. 40.3%; P = 0.04). There was no interaction between socioeconomic status and the preoperative BCVA in the grafted eye. However, BCVA in the fellow eye was poorer for the most economically deprived patients compared with the least deprived in 2013 (P = 0.01). CONCLUSIONS: We found no evidence of a relationship between socioeconomic deprivation and BCVA in the transplant recipient eye. However, there was clear evidence of an association between socioeconomic deprivation and reduced acuity in fellow eyes, for which barriers to access or low patient demand may be possible contributors.


Assuntos
Ceratoplastia Penetrante , Carência Psicossocial , Classe Social , Acuidade Visual/fisiologia , Adulto , Doenças da Córnea/fisiopatologia , Doenças da Córnea/cirurgia , Transplante de Córnea , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Sistema de Registros , Estudos Retrospectivos , Reino Unido
16.
Neurobiol Aging ; 40: 110-119, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26973110

RESUMO

The impact of many inflammatory diseases is influenced by age-related changes in the activation of resident and circulating myeloid cells. In the eye, a major sight-threatening consequence of age-related macular degeneration is the development of severe choroidal neovascularization (CNV). To identify the molecular pathways and myeloid cell populations involved in this increased neovascular response, we characterized the immune status of murine choroid and retina during aging and in the context of experimental CNV. In the choroid, but not in the retina, advancing age is associated with proinflammatory upregulation of CCL2-CCR2 signaling. Genetic excision of CCL2 diminishes age-related inflammatory changes in the choroid, with reduced recruitment of proinflammatory myeloid cells and attenuation of CNV. These findings indicate that CCL2-driven recruitment of myeloid cells contributes to increased severity of CNV with age. Similar mechanisms may be involved in other age-related inflammatory diseases.


Assuntos
Envelhecimento/genética , Envelhecimento/patologia , Quimiocina CCL2/fisiologia , Neovascularização de Coroide/genética , Neovascularização de Coroide/patologia , Receptores CCR2/fisiologia , Transdução de Sinais , Animais , Células Cultivadas , Camundongos Endogâmicos C57BL , Camundongos Knockout , Índice de Gravidade de Doença
17.
Cont Lens Anterior Eye ; 39(4): 316-7, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26851136

RESUMO

PURPOSE: To report a mass presentation of photokeratitis arising from exposure to an unprotected ultraviolet-B (UV-B) light source. RESULTS: A cluster of 22 patients presented within a 24-h period to a single eye casualty with symptoms of photokeratitis following recent intense UV-B exposure at a local nightclub. Patients were treated with a short course of chloramphenicol, steroid or lubricant eye drops. No patients re-attended. CONCLUSION: This report highlights the hazards of ultraviolet lamps used in public places and the need for strict guidance and enforcement of UV radiation safety protocols to avoid the potential public health risk.


Assuntos
Exposição Ambiental/efeitos adversos , Ceratite/etiologia , Atividades de Lazer , Iluminação/efeitos adversos , Incidentes com Feridos em Massa/prevenção & controle , Transtornos de Fotossensibilidade/tratamento farmacológico , Transtornos de Fotossensibilidade/etiologia , Raios Ultravioleta/efeitos adversos , Adolescente , Cloranfenicol/uso terapêutico , Feminino , Humanos , Ceratite/tratamento farmacológico , Lubrificantes Oftálmicos/uso terapêutico , Masculino , Esteroides/uso terapêutico , Resultado do Tratamento , Adulto Jovem
18.
J Cataract Refract Surg ; 41(10): 2125-35, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26703288

RESUMO

PURPOSE: To assess the feasibility of a new injectable telescopic intraocular lens (IOL). SETTING: London Eye Hospital, London, United Kingdom. DESIGN: Prospective interventional pilot study. METHOD: Eyes with bilateral, intermediate, or advanced dry age-related macular degeneration (AMD); preoperative decimal corrected distance visual acuity (CDVA) of 0.25 or less; and improvement with extraocular simulation of the intervention had implantation of 2 IOLs designed for use together in a Galilean telescope configuration (iolAMD). Patients were followed for 4 months. Safety was assessed by monitoring visual acuity, intraocular pressure, specular microscopy, and anterior segment and macular optical coherence tomographies. Fixation stability and macular sensitivity were determined using microperimetry in some eyes. RESULTS: There were no significant intraoperative or postoperative complications. In 1 eye, an anterior sulcus IOL was replaced; there were no sequelae. The mean endothelial cell density was reduced by 18%. The mean decimal CDVA improved from 0.12 preoperatively to 0.20 at 4 months, a 67% gain. The mean change in spherical equivalent after implantation was -1.5 diopters (D) with 0.5 D of induced astigmatism. Microperimetric testing indicated a magnification effect and a deviation of the retinal image by up to 5 degrees, with improved fixation stability. CONCLUSIONS: This injectable intraocular miniature telescope appears safe in the short to medium term and capable of improving visual function. No significant issues were encountered regarding candidate eye selection or patient retention and cooperation. Further work is needed to evaluate the safety and efficacy of the device, particularly with respect to daily-living activities and the range of indications. FINANCIAL DISCLOSURE: Dr. Qureshi has a financial interest in London Eye Hospital Pharma. No other author has a financial or proprietary interest in any material or method mentioned.


Assuntos
Atrofia Geográfica/reabilitação , Implante de Lente Intraocular/métodos , Lentes Intraoculares , Facoemulsificação , Transtornos da Visão/reabilitação , Resinas Acrílicas/administração & dosagem , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Estudos de Viabilidade , Feminino , Atrofia Geográfica/fisiopatologia , Humanos , Injeções Intraoculares , Cápsula do Cristalino/efeitos dos fármacos , Masculino , Projetos Piloto , Estudos Prospectivos , Pseudofacia/fisiopatologia , Tomografia de Coerência Óptica , Transtornos da Visão/fisiopatologia , Acuidade Visual/fisiologia
19.
J Vis ; 15(15): 20, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26605849

RESUMO

Restored rod visual function after gene therapy can be established unequivocally by demonstrating that, after dark adaptation, spectral sensitivity has the shape characteristic of rods and that this shape collapses to a cone-like shape before rods have recovered after an intense bleach. We used these tests to assess retinal function in eight young adults and children with early-onset severe retinal dystrophy from Phase II of a clinical gene-therapy trial for RPE65 deficiency that involved the subretinal delivery of a recombinant adeno-associated viral vector carrying RPE65. We found substantial improvements in rod sensitivity in two participants: dark-adapted spectral sensitivity was rod-like after treatment and was cone-like before rods had recovered after a bleach. After 40 min of dark adaptation, one participant showed up to 1,000-fold sensitivity improvements 4 months after treatment and the second up to 100-fold improvements 6 months after treatment. The dark-adapted spectral sensitivities of the other six participants remained cone-like and showed little improvement in sensitivity.


Assuntos
Dependovirus/genética , Terapia Genética , Amaurose Congênita de Leber/fisiopatologia , Amaurose Congênita de Leber/terapia , Células Fotorreceptoras Retinianas Bastonetes/fisiologia , Visão Ocular/fisiologia , cis-trans-Isomerases/genética , Adulto , Criança , Adaptação à Escuridão/fisiologia , Vetores Genéticos , Humanos , Luz , Pessoa de Meia-Idade , Estimulação Luminosa , Acuidade Visual/fisiologia , Campos Visuais/fisiologia , Adulto Jovem
20.
Am J Pathol ; 185(9): 2534-49, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26188133

RESUMO

Choroidal neovascularization (CNV) is a defining feature of wet age-related macular degeneration. We examined the functional role of CCR3 in the development of CNV in mice and primates. CCR3 was associated with spontaneous CNV lesions in the newly described JR5558 mice, whereas CCR3 ligands localized to CNV-associated macrophages and the retinal pigment epithelium/choroid complex. Intravitreal injection of neutralizing antibodies against vascular endothelial growth factor receptor 2, CCR3, CC chemokine ligand 11/eotaxin-1, and CC chemokine ligand 24/eotaxin-2 all reduced CNV area and lesion number in these mice. Systemic administration of the CCR3 antagonists GW766994X and GW782415X reduced spontaneous CNV in JR5558 mice and laser-induced CNV in mouse and primate models in a dose-dependent fashion. Combination treatment with antivascular endothelial growth factor receptor 2 antibody and GW766994X yielded additive reductions in CNV area and hyperpermeability in mice. Interestingly, topical GW766994X and intravitreal anti-CCR3 antibody yielded strong systemic effects, reducing CNV in the untreated, contralateral eye. Contrarily, ocular administration of GW782415X in primates failed to substantially elevate plasma drug levels or to reduce the development of grade IV CNV lesions. These findings suggest that CCR3 signaling may be an attractive therapeutic target for CNV, utilizing a pathway that is at least partly distinct from that of vascular endothelial growth factor receptor. The findings also demonstrate that systemic exposure to CCR3 antagonists may be crucial for CNV-targeted activity.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Permeabilidade Capilar/efeitos dos fármacos , Neovascularização de Coroide/tratamento farmacológico , Receptores CCR3/antagonistas & inibidores , Degeneração Macular Exsudativa/tratamento farmacológico , Animais , Permeabilidade Capilar/imunologia , Corioide/patologia , Neovascularização de Coroide/patologia , Modelos Animais de Doenças , Camundongos , Camundongos Endogâmicos C57BL , Fator A de Crescimento do Endotélio Vascular/metabolismo , Degeneração Macular Exsudativa/patologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA