RESUMO
BACKGROUND: Treatment of pediatric cataract remains challenging because of the extremely high incidence of postoperative adverse events (AEs), especially the AEs related to the locations of secondary implanted intraocular lens (IOL). There are two common locations for secondary IOL implantation in pediatric aphakic eyes: ciliary sulcus or in-the-bag implantation. However, there are currently no large, prospective studies comparing complication rates and visual prognosis of in-the-bag versus ciliarysulcus secondary IOL implantation in pediatric patients. Whether or how much secondary in-the-bag IOL implantation benefits the pediatric patients more than sulcus implantation and deserves to be performed routinely by surgeons remains to be elucidated. Here, we describe the protocol of a randomized controlled trial (RCT) designed to evaluate the safety and efficacy of two approaches of IOL implantation in pediatric aphakia. METHODS: The study is a multicenter, single-blinded RCT with 10 years of follow-up. Overall, a minimum of 286 eyes (approximately 228 participants assuming 75% have two study eyes) will be recruited. This study will be carried out in four eye clinics across China. Consecutive eligible patients are randomized to undergo either secondary in-the-bag IOL implantation or secondary sulcus IOL implantation. Participants with two eyes eligible will receive the same treatment. The primary outcomes are IOL decentration and the incidence of glaucoma-related AEs. The secondary outcomes include the incidence of other AEs, IOL tilt, visual acuity, and ocular refractive power. Analysis of the primary and secondary outcomes is to be based on the intention-to-treat and per-protocol analysis. Statistical analyses will include the χ2 test or Fisher's exact test for the primary outcome, mixed model and generalized estimated equation (GEE) model for the secondary outcome, Kaplan-Meier survival curves for the cumulative probability of glaucoma-related AEs over time in each group. DISCUSSION: To the best of our knowledge, this study is the first RCT to evaluate the safety and efficacy of secondary IOL implantation in pediatric aphakia. The results will provide high-quality evidence for the clinical guidelines for the treatment of pediatric aphakia. TRIAL REGISTRATION: ClinicalTrials.gov NCT05136950. Registered on 1 November 2021.
Assuntos
Afacia Pós-Catarata , Catarata , Glaucoma , Criança , Humanos , Implante de Lente Intraocular/efeitos adversos , Implante de Lente Intraocular/métodos , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Acuidade Visual , Catarata/complicações , Estudos Retrospectivos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgiaRESUMO
Importance: Glaucoma can develop following cataract removal in children. Objective: To assess the cumulative incidence of glaucoma-related adverse events (defined as glaucoma or glaucoma suspect) and factors associated with risk of these adverse events in the first 5 years after lensectomy prior to 13 years of age. Design, Setting, and Participants: This cohort study used longitudinal registry data collected at enrollment and annually for 5 years from 45 institutional and 16 community sites. Participants were children aged 12 years or younger with at least 1 office visit after lensectomy from June 2012 to July 2015. Data were analyzed from February through December 2022. Exposures: Usual clinical care after lensectomy. Main Outcomes and Measures: The main outcomes were cumulative incidence of glaucoma-related adverse events and baseline factors associated with risk of these adverse events. Results: The study included 810 children (1049 eyes); 443 eyes of 321 children (55% female; mean [SD] age, 0.89 [1.97] years) were aphakic after lensectomy, and 606 eyes of 489 children (53% male; mean [SD] age, 5.65 [3.32] years) were pseudophakic. The 5-year cumulative incidence of glaucoma-related adverse events was 29% (95% CI, 25%-34%) in 443 eyes with aphakia and 7% (95% CI, 5%-9%) in 606 eyes with pseudophakia; 7% (95% CI, 5%-10%) of aphakic eyes and 3% (95% CI, 2%-5%) of pseudophakic eyes were diagnosed as glaucoma suspect. Among aphakic eyes, a higher risk for glaucoma-related adverse events was associated with 4 of 8 factors, including age less than 3 months (vs ≥3 months: adjusted hazard ratio [aHR], 2.88; 99% CI, 1.57-5.23), abnormal anterior segment (vs normal: aHR, 2.88; 99% CI, 1.56-5.30), intraoperative complications at time of lensectomy (vs none; aHR, 2.25; 99% CI, 1.04-4.87), and bilaterality (vs unilaterality: aHR, 1.88; 99% CI, 1.02-3.48). Neither of the 2 factors evaluated for pseudophakic eyes, laterality and anterior vitrectomy, were associated with risk of glaucoma-related adverse events. Conclusions and Relevance: In this cohort study, glaucoma-related adverse events were common after cataract surgery in children; age less than 3 months at surgery was associated with elevated risk of the adverse events in aphakic eyes. Children with pseudophakia, who were older at surgery, less frequently developed a glaucoma-related adverse event within 5 years of lensectomy. The findings suggest that ongoing monitoring for the development of glaucoma is needed after lensectomy at any age.
Assuntos
Afacia Pós-Catarata , Extração de Catarata , Catarata , Glaucoma , Hipertensão Ocular , Criança , Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Pseudofacia , Incidência , Estudos de Coortes , Afacia Pós-Catarata/epidemiologia , Afacia Pós-Catarata/etiologia , Pressão Intraocular , Extração de Catarata/efeitos adversos , Extração de Catarata/estatística & dados numéricos , Glaucoma/diagnóstico , Catarata/etiologia , Catarata/complicações , Hipertensão Ocular/etiologiaRESUMO
INTRODUCTION: The correction of aphakia when there is no adequate capsular support remains a therapeutic challenge. The use of retroiridial fixation lenses has been extended given their lower complication rate compared to other available options. MATERIAL AND METHODS: Retrospective study including all cases operated with an Artisan® retropupillary aphakia implant. RESULTS: 33 eyes were included out of a total of 28 patients. The follow-up period has been 38.55 months (1-96). 32.3% had a lens dislocation and 67.7% had an intraocular lens dislocation. The previous mean best corrected visual acuity (BCVA) was 1.18 ± 0.79 logMAR and post-intervention 0.36 ± 0.62 (p < 0.01). 93.8% of the patients presented a final BCVA equal to or better and 62.5% an improvement of 3 or more lines. The most frequent complication was corectopia (31.3%) and hypotony in the immediate postoperative period (21.9%). An epiretinal membrane (ERM) developed in 18.8% and cystic macular oedema (CME) in 9.4%. The presence of complications in the postoperative period did not statistically influence the final BCVA. CONCLUSIONS: The retropupillary Artisan® lens allows the correction of aphakia with satisfactory visual results and a low rate of complications.
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Afacia Pós-Catarata , Subluxação do Cristalino , Lentes Intraoculares , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Humanos , Iris/cirurgia , Implante de Lente Intraocular/efeitos adversos , Implante de Lente Intraocular/métodos , Subluxação do Cristalino/complicações , Subluxação do Cristalino/cirurgia , Lentes Intraoculares/efeitos adversos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Estudos Retrospectivos , Acuidade VisualRESUMO
IMPORTANCE: Cataract is an important cause of visual impairment in children. Data from a large pediatric cataract surgery registry can provide real-world estimates of visual outcomes and the 5-year cumulative incidence of adverse events. OBJECTIVE: To assess visual acuity (VA), incidence of complications and additional eye operations, and refractive error outcomes 5 years after pediatric lensectomy among children younger than 13 years. DESIGN, SETTING, AND PARTICIPANTS: This prospective cohort study used data from the Pediatric Eye Disease Investigator Group clinical research registry. From June 2012 to July 2015, 61 eye care practices in the US, Canada, and the UK enrolled children from birth to less than 13 years of age who had undergone lensectomy for any reason during the preceding 45 days. Data were collected from medical record reviews annually thereafter for 5 years until September 28, 2020. EXPOSURES: Lensectomy with or without implantation of an intraocular lens (IOL). MAIN OUTCOMES AND MEASURES: Best-corrected VA and refractive error were measured from 4 to 6 years after the initial lensectomy. Cox proportional hazards regression was used to assess the 5-year incidence of glaucoma or glaucoma suspect and additional eye operations. Factors were evaluated separately for unilateral and bilateral aphakia and pseudophakia. RESULTS: A total of 994 children (1268 eyes) undergoing bilateral or unilateral lensectomy were included (504 [51%] male; median age, 3.6 years; range, 2 weeks to 12.9 years). Five years after the initial lensectomy, the median VA among 701 eyes with available VA data (55%) was 20/63 (range, 20/40 to 20/100) in 182 of 316 bilateral aphakic eyes (58%), 20/32 (range, 20/25 to 20/50) in 209 of 386 bilateral pseudophakic eyes (54%), 20/200 (range, 20/50 to 20/618) in 124 of 202 unilateral aphakic eyes (61%), and 20/65 (range, 20/32 to 20/230) in 186 of 364 unilateral pseudophakic eyes (51%). The 5-year cumulative incidence of glaucoma or glaucoma suspect was 46% (95% CI, 28%-59%) in participants with bilateral aphakia, 7% (95% CI, 1%-12%) in those with bilateral pseudophakia, 25% (95% CI, 15%-34%) in those with unilateral aphakia, and 17% (95% CI, 5%-28%) in those with unilateral pseudophakia. The most common additional eye surgery was clearing the visual axis, with a 5-year cumulative incidence of 13% (95% CI, 8%-17%) in participants with bilateral aphakia, 33% (95% CI, 26%-39%) in those with bilateral pseudophakia, 11% (95% CI, 6%-15%) in those with unilateral aphakia, and 34% (95% CI, 28%-39%) in those with unilateral pseudophakia. The median 5-year change in spherical equivalent refractive error was -8.38 D (IQR, -11.38 D to -2.75 D) among 89 bilateral aphakic eyes, -1.63 D (IQR, -3.13 D to -0.25 D) among 130 bilateral pseudophakic eyes, -10.75 D (IQR, -20.50 D to -4.50 D) among 43 unilateral aphakic eyes, and -1.94 D (IQR, -3.25 D to -0.69 D) among 112 unilateral pseudophakic eyes. CONCLUSIONS AND RELEVANCE: In this cohort study, development of glaucoma or glaucoma suspect was common in children 5 years after lensectomy. Myopic shift was modest during the 5 years after placement of an intraocular lens, which should be factored into implant power selection. These results support frequent monitoring after pediatric cataract surgery to detect glaucoma, visual axis obscuration causing reduced vision, and refractive error.
Assuntos
Afacia Pós-Catarata , Afacia , Extração de Catarata , Catarata , Glaucoma , Hipertensão Ocular , Erros de Refração , Afacia/complicações , Afacia Pós-Catarata/epidemiologia , Afacia Pós-Catarata/etiologia , Catarata/etiologia , Extração de Catarata/efeitos adversos , Extração de Catarata/métodos , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Seguimentos , Glaucoma/diagnóstico , Glaucoma/epidemiologia , Glaucoma/etiologia , Humanos , Lactente , Implante de Lente Intraocular/efeitos adversos , Masculino , Hipertensão Ocular/etiologia , Estudos Prospectivos , Pseudofacia/epidemiologia , Erros de Refração/complicações , Transtornos da Visão/etiologia , Acuidade VisualRESUMO
PURPOSE: To report the outcomes of sutureless intrascleral fixation of a 3-piece intraocular lens in the ciliary sulcus, in a large cohort of patients with aphakia of various aetiology METHODS: Retrospective, non-comparative, single centre interventional study of 250 aphakic eyes of various causes, which underwent sutureless and glueless intrascleral fixation of 3-piece intraocular lens (IOL). All patients were required to have at least 3 months of follow up post procedure to be included in the study. Anatomical and functional outcomes obtained were statistically analysed for significance. RESULTS: A total of 250 eyes of 246 patients were included in the study population. The average age was 56.5 years ± 16.4 (range 6-86 years). The mean best-corrected visual acuity (BCVA) significantly improved from 0.74 ± 0.6 logMAR (approx. Snellen equivalent 20/110) to 0.48 ± 0.36 logMAR (approx. Snellen equivalent 20/60), (p < 0.001) following surgery. Early postoperative complication (<2 weeks) included hypotony (n = 10, 4%), ocular hypertension (n = 38,15.2%) and vitreous haemorrhage (n = 50, 20%). Late complications included retinal detachment (n = 14, 5.6%%), cystoid macular oedema (n = 24, 9.6%), scleral erosion (n = 1, 0.4%), haptic extrusion to subconjunctival space (n = 3, 1.2%) and IOL subluxation or dislocation (n = 5, 2%) CONCLUSION: This cost-effective and easier technique of sutureless scleral fixated 3-piece IOL implantation provided good visual acuity outcomes in a large cohort of patients and was well tolerated.
Assuntos
Afacia Pós-Catarata , Lentes Intraoculares , Humanos , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Implante de Lente Intraocular/métodos , Afacia Pós-Catarata/etiologia , Estudos Retrospectivos , Lentes Intraoculares/efeitos adversos , Esclera/cirurgiaRESUMO
PURPOSE: To compare outcomes of in-the-bag vs ciliary sulcus secondary intraocular lens (IOL) implantation for pediatric aphakia. DESIGN: Prospective interventional case series. METHODS: This institutional study was conducted in 202 children (355 aphakic eyes) diagnosed as having congenital cataracts and who underwent cataract extraction before age 24 months. Pediatric aphakic eyes underwent in-the-bag or ciliary sulcus secondary IOL implantation according to the amount of residual lens capsule and were monitored for 3 years postoperatively. The main outcome measures were adverse events (AEs), IOL tilt and decentration, and best corrected visual acuity (BCVA) in the operative eye. RESULTS: A total of 144 eyes (40.6%, 89 children) received in-the-bag IOL implantation (capsular group), and 211 eyes (59.4%, 132 children) underwent ciliary sulcus IOL implantation (sulcus group). Kaplan-Meier curves showed that the time-dependent incidence of glaucoma-related AEs (GRAEs) (P = .005) and any AEs (P = .002) were higher in the sulcus group. In-the-bag IOL implantation was a strong protective factor against GRAE (hazard ratio, 0.08; 95% CI, 0.01-0.53; P = .009) and any AEs (hazard ratio, 0.21; 95% CI, 0.08-0.57; P = .002). Clinically significant IOL decentration (>0.4 mm) was more common in the sulcus group compared with the capsular group (vertical decentration: 29.8% vs 15.7%, P = .005; horizontal decentration: 30.3% vs 9.35%, P < .001). BCVA in the capsular group was better than that in the sulcus group (logMAR, 0.56 vs 0.67, P = .014). CONCLUSIONS: Compared with ciliary sulcus secondary IOL implantation, in-the-bag IOL implantation reduced AEs and yielded better IOL centration and BCVA for pediatric aphakia.
Assuntos
Afacia Pós-Catarata , Extração de Catarata , Cápsula do Cristalino , Lentes Intraoculares , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Extração de Catarata/efeitos adversos , Criança , Pré-Escolar , Humanos , Cápsula do Cristalino/cirurgia , Implante de Lente Intraocular/efeitos adversos , Lentes Intraoculares/efeitos adversos , Estudos ProspectivosRESUMO
PURPOSE: To review information pertaining to glaucoma following infant lensectomy surgery and to provide evidence to support the responsible mechanism of this condition. METHODS AND RESULTS: Described risk factors and proposed mechanisms for infantile aphakic glaucoma were assessed. The clinical evidence observed in affected glaucoma patients was analyzed, and evidence of postoperative anterior chamber fibrosis was reviewed and interpreted. CONCLUSION: The review and assessment of laboratory and clinical evidence support the proposal that infantile aphakic glaucoma is caused, in part, by postoperative anterior chamber fibroization related to lens cell dispersion and active epithelial-mesenchymal transition with resultant filtration angle tissue injury and loss of function.
Assuntos
Afacia Pós-Catarata , Extração de Catarata , Catarata , Glaucoma , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Glaucoma/etiologia , Glaucoma/cirurgia , Humanos , Lactente , Pressão Intraocular , Estudos RetrospectivosRESUMO
OBJECTIVES: To report the myopic shift in the aphakic eyes of a cohort of children who underwent unilateral cataract surgery during infancy and were then followed longitudinally for 10.5 years. METHODS: One-half of the children enrolled in the Infant Aphakia Treatment Study (IATS) were randomized to aphakia and contact lens correction after unilateral cataract surgery. They then underwent ocular examinations using standardized protocols at prescribed time intervals until age 10.5 years. RESULTS: Thirty of 57 children randomized to aphakia remained aphakic at age 10.5, having undergone unilateral cataract surgery at a median age of 1.6 (IQR: 1.1-3.1) months. The median refractive error (RE) in the 57 eyes randomized to aphakia immediately after cataract surgery was 19.01 D (IQR: 16.98-20.49) compared to 10.38 D (IQR: 7.50-14.00) for the 30 eyes that remained aphakic at age 10.5 years. The mean change in RE in aphakic eyes was -2.11 D/year up to age 1.5 years, -0.68 D/year from 1.5 to 5.0 years, and -0.35 D/year from age 5 to 10.5 years. At age 10.5 years, 18 patients continued to wear a contact lens correction (silicone elastomer, n=6; gas permeable, n=6; hydrogel, n=5; and silicone hydrogel, n=1) (median RE, 12.50 D), 9 wore only spectacles (median RE, 4.00 D), and 4 wore no correction (median RE, 11.25 D) to correct their aphakic eye. CONCLUSIONS: The RE in aphakic eyes decreased by 44% from infancy to age 10.5 years. About two-thirds of children who remained aphakic at age 10.5 years continued to wear a contact lens.
Assuntos
Afacia Pós-Catarata , Extração de Catarata , Catarata , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/terapia , Criança , Pré-Escolar , Seguimentos , Humanos , Lactente , Implante de Lente Intraocular , Acuidade VisualRESUMO
To observe the ocular axis, visual acuity and intraocular pressure (IOP) of aphakic eye in infants with congenital cataract and complex microphthalmos after first-stage cataract surgery.This retrospective study included infants with congenital cataract and operated at the Qingdao Eye Hospital between January 2010 and December 2014. The infants were divided into 2 groups: preoperative axial length <18âmm (microphthalmos) or ≥18âmm (controls). Follow-up lasted 24 months; visual acuity, axial length, and IOP were evaluated.There were 28 infants (55 eyes) in the microphthalmos group and 35 (61 eyes) in the control group. The preoperative visual acuity was negative for optokinetic nystagmus, while the postoperative visual acuity was positive for optokinetic nystagmus in both groups. The growth rate was higher in the microphthalmos group (1.4â±â0.8 vs 0.8â±â0.4âmm/yr, Pâ<â.001 vs controls). The axial length was smaller in the microphthalmos group at all time points compared with the control group (all Pâ<â.001). There was no changes in IOP in the microphthalmos group from baseline to 24 months (Pâ=â.147), but the IOP was slightly decreased in the control group (Pâ=â.015).Cataract surgery may contribute to ocular axis growth in infants with complex microphthalmos.
Assuntos
Comprimento Axial do Olho/crescimento & desenvolvimento , Extração de Catarata/métodos , Catarata/congênito , Afacia Pós-Catarata/etiologia , Estudos de Casos e Controles , Catarata/complicações , Feminino , Humanos , Lactente , Masculino , Microftalmia/complicações , Estudos Retrospectivos , Acuidade VisualRESUMO
To determine whether the fellow eye of children who have undergone unilateral cataract extraction in the first year of life are at increased risk of injury and vision loss, the 10.5-year data on 109 of 114 children enrolled in the Infant Aphakia Treatment Study were examined. Based on this limited data, it was estimated that the fellow eye is at greater risk of injury than the operated eye. Our data do not support the risk being higher in children with the worst vision in the treated eye.
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Afacia Pós-Catarata , Extração de Catarata , Catarata , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Catarata/etiologia , Criança , Seguimentos , Humanos , Lactente , Implante de Lente Intraocular , Acuidade VisualRESUMO
PURPOSE: To report the change in globe axial length (AL) from the time of unilateral cataract surgery at age 1-7 months to age 10.5 years for infants enrolled in the Infant Aphakia Treatment Study, and to compare AL growth of operated eyes with that of fellow unoperated eyes. DESIGN: Comparative case series. METHODS: AL growth was analyzed relative to treated vs fellow eye, contact lens (CL) vs intraocular lens (IOL), visual acuity (VA) outcome, and the need for surgery for visual axis opacification. Eyes with glaucoma or glaucoma suspect were excluded from the primary analysis but reported separately. RESULTS: Fifty-seven patients have reliable AL data available at both visits. AL was shorter in treated eyes preoperatively (P < .0001) and at 10.5 years of age (P = .021) but AL growth was not different (4.7 mm, P = .99). The growth (70.2% up to age 5 and 29.8% from age 5 to 10.5) was similar in the CL and the IOL group (P = .79). Eyes grew 4.4 mm when visual acuity (VA) was better than 20/200, and 5.2 mm when VA was 20/200 or worse (P = .076). Eyes receiving additional surgery grew more than eyes not receiving additional surgery (P = .052). Patients with glaucoma showed significantly more eye growth (7.3 mm) than those without glaucoma (4.7 mm) and glaucoma suspects (5.1 mm) (P < .05). CONCLUSIONS: Eyes with glaucoma or poor VA often grew longer than the fellow eye. Overall, treated eyes grew similarly in the IOL and CL groups and also kept pace with the growth of the fellow eyes.
Assuntos
Afacia Pós-Catarata/terapia , Comprimento Axial do Olho/crescimento & desenvolvimento , Catarata/congênito , Lentes de Contato , Implante de Lente Intraocular , Afacia Pós-Catarata/etiologia , Extração de Catarata , Criança , Feminino , Seguimentos , Glaucoma/complicações , Humanos , Lactente , Masculino , Órbita , Acuidade Visual/fisiologiaRESUMO
PURPOSE: To evaluate the safety and efficacy of a novel approach to implant Ex-Press mini shunt via the pars plana under a scleral flap in pseudophakic or aphakic, vitrectomized patients with secondary refractory glaucoma. METHODS: A prospective interventional case series of three patients with secondary glaucoma after pars plana vitrectomy. Intraocular pressure was not controlled by silicone oil removal, if the patient was siliconized, nor the maximum medical treatment. Ex-Press mini shunt via the pars plana was implanted. We evaluated the control of intraocular pressure and the development of intraoperative and postoperative complications. RESULTS: During 1-year follow-up, control of intraocular pressure was achieved; 14, 15, and 15 mmHg at the 3 months, and 15, 15, and 16 mmHg at the 6 months in our three cases without antiglaucoma treatment and 16, 16, and 18 with single antiglaucoma medication at 1 year. Blebs were posterior and diffuse. No complications were encountered intraoperatively or postoperatively. Ultrasound biomicroscopy showed suprachoroidal posterior lake of fluid as an additional filtration route without any choroidal or retinal complication. CONCLUSION: Implantation of Ex-Press mini shunt via the pars plana in aphakic or pseudophakic, vitrectomized eyes is a promising, safe, and effective technique in patients with secondary glaucoma.
Assuntos
Afacia Pós-Catarata/etiologia , Implantes para Drenagem de Glaucoma , Glaucoma/cirurgia , Pseudofacia/etiologia , Vitrectomia , Adulto , Idoso , Feminino , Glaucoma/fisiopatologia , Humanos , Pressão Intraocular/fisiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Implantação de Prótese , Esclera/cirurgia , Óleos de Silicone/administração & dosagem , Retalhos Cirúrgicos , Tonometria OcularAssuntos
Afacia Pós-Catarata/etiologia , Extração de Catarata/efeitos adversos , Edema da Córnea/etiologia , Afacia Pós-Catarata/terapia , Edema da Córnea/diagnóstico por imagem , Edema da Córnea/terapia , Óculos , Humanos , Masculino , Pessoa de Meia-Idade , Miopia Degenerativa/diagnóstico por imagem , Miopia Degenerativa/etiologia , Miopia Degenerativa/terapia , Microscopia com Lâmpada de Fenda , Síndrome , Tomografia de Coerência Óptica , Acuidade Visual/fisiologiaRESUMO
A new technique of correcting tube-corneal touch is described in a case of Ahmed glaucoma valve implantation. This technique repositions the intracameral tube without externalization unlike the standard procedures which aim to correct tube-corneal touch. The technique makes use of a transscleral supracapsular anchor suture to facilitate repositioning of the tube within the ciliary sulcus. Feasible only in pseudophakic and aphakic patients, either a preexisting iridectomy or intraoperative iridectomy is an essential prerequisite to perform this procedure. The final positioning of the tube within the sulcus potentially prevents chronic rubbing of the iris by polypropylene suture as opposed to a transcameral suture.
Assuntos
Endotélio Corneano/patologia , Implantes para Drenagem de Glaucoma , Glaucoma/cirurgia , Falha de Prótese/etiologia , Implantação de Prótese/métodos , Tato , Afacia Pós-Catarata/etiologia , Afacia Pós-Catarata/cirurgia , Pré-Escolar , Glaucoma/etiologia , Humanos , Pressão Intraocular , Masculino , Reoperação , Retalhos Cirúrgicos , Técnicas de SuturaRESUMO
BACKGROUND: The etiology of aphakic glaucoma is unclear. It has been suggested that remaining lens epithelium releases cytokines transducing trabecular meshwork cells. Therefore, we compared two cohorts of children undergoing lensectomy. In cohort 1, the entire lens including its capsule was removed, in cohort 2 the peripheral lens capsule was left intact, also to facilitate secondary intraocular lens implantation later on. METHODS: We included children with uni- or bilateral congenital cataract who underwent lensectomy during the first year of life with subsequent contact lenses fitting. Group 1 comprised 41 eyes, group 2 comprised 33 eyes. In group 1, the median age at surgery was 4.0 months in unilateral and 3.0 months in bilateral cases 1, in group 2, 8.1 months and 2.4 months, respectively. The mean follow-up was 12.8 years in group 1 and 9.3 years in group 2. All cases were analyzed for the prevalence of aphakic glaucoma, for visual acuity and for compliance in visual rehabilitation (contact lens/occlusion therapy). RESULTS: We found no significant difference in glaucoma prevalence between group 1 and group 2 (p = 0.68). The overall glaucoma rate was 26% after the mean follow-up of 11 years in both groups. In unilateral cases, the median visual acuity was logMAR 0.7 in both groups. In bilateral cases it was logMAR 0.4 in group 1 and logMAR 0.2 in group 2 (p = 0.05). CONCLUSIONS: Leaving the peripheral lens capsule intact had no negative effect on the incidence of glaucoma and on resulting visual acuity.
Assuntos
Afacia Pós-Catarata/etiologia , Extração de Catarata/efeitos adversos , Catarata/congênito , Glaucoma/etiologia , Cápsula do Cristalino/cirurgia , Cristalino/cirurgia , Ambliopia/fisiopatologia , Feminino , Seguimentos , Humanos , Lactente , Implante de Lente Intraocular , Masculino , Modelos de Riscos Proporcionais , Fatores de Risco , Acuidade Visual/fisiologiaRESUMO
PURPOSE:: To describe the clinical outcomes of traumatic aphakic eyes with corneal astigmatism after using a novel technique for toric intraocular lens suture fixation. METHODS:: In total, 12 eyes of 12 patients who underwent a new scleral suture fixation technique of one-piece toric intraocular lens (SN6AT series, Alcon Inc., TX, USA) were included in our retrospective study. Preoperative patient status, postoperative visual acuity and refractive outcomes, postoperative intraocular lens rotation, tilt, decentration, and complications were analyzed. RESULTS:: The mean follow-up was 11.6 ± 1.0 months. The mean preoperative best-corrected visual acuity was 0.55 ± 0.32 in the logarithm of minimum angle of resolution equivalent; the postoperative best-corrected visual acuity was 0.45 ± 0.34. The mean preoperative total corneal astigmatism was 2.51 ± 1.67 D. The mean postoperative residual astigmatism was 0.77 ± 0.54 D. The mean intraocular lens rotation was 3.33° ± 1.37° (range, 1°-6°). The mean intraocular lens tilt in horizontal direction was 3.64° ± 1.02° (range, 2.6°-6.3°) and in vertical direction it was 3.19° ± 1.07 ° (range, 1.6°-5.2°). The mean intraocular lens decentration in horizontal direction was 0.14 ± 0.03 mm (range, 0.089-0.192 mm) and in vertical direction it was 0.15 ± 0.02 mm (range, 0.113-0.181 mm). One patient had mild vitreous hemorrhage and two other patients had high postoperative residual sphere and astigmatism, respectively. But no other serious complications were observed. CONCLUSION:: Scleral suture fixation of foldable toric intraocular lens to correct corneal astigmatism can be a safe and effective alternative technique to manage traumatic aphakic eyes that lack adequate capsular support.
Assuntos
Afacia Pós-Catarata/cirurgia , Astigmatismo/cirurgia , Traumatismos Oculares/cirurgia , Implante de Lente Intraocular/métodos , Cristalino/lesões , Esclera/cirurgia , Técnicas de Sutura , Adolescente , Adulto , Idoso , Afacia Pós-Catarata/etiologia , Astigmatismo/etiologia , Traumatismos Oculares/etiologia , Feminino , Humanos , Lentes Intraoculares , Masculino , Pessoa de Meia-Idade , Facoemulsificação/métodos , Complicações Pós-Operatórias , Estudos Retrospectivos , Testes Visuais , Acuidade Visual/fisiologiaRESUMO
BACKGROUND: Descemet's membrane endothelial keratoplasty has a lower risk of endothelial rejection than Descemet's stripping automated endothelial keratoplasty. In aphakic eyes requiring endothelial transplantation, approaches aimed at reducing the risk of posterior graft dislocation in Descemet's stripping automated endothelial keratoplasty are not transferable to Descemet's membrane endothelial keratoplasty. TECHNIQUE: Here we describe the use of an implantable collamer lens placed over the iris to provide a temporary intraoperative platform, to facilitate graft unfolding and to avoid posterior graft dislocation in an aphakic, vitrectomised eye with a fixed, dilated pupil in a young patient with chronic uveitis and previous failed Descemet's stripping automated endothelial keratoplasty.
Assuntos
Afacia Pós-Catarata/etiologia , Ceratoplastia Endotelial com Remoção da Lâmina Limitante Posterior/métodos , Implante de Lente Intraocular , Lentes Intraoculares Fácicas , Doença Crônica , Feminino , Humanos , Uveíte Intermediária/complicações , Acuidade Visual , Vitrectomia , Adulto JovemRESUMO
PURPOSE: To evaluate the efficacy and safety of aphakic Artisan-Verysise intraocular lens (IOL) primarily implanted for complicated cataract surgery. METHODS: A retrospective analysis of 49 eyes that underwent primary aphakic Artisan IOL implantation for complicated cataract surgery. Pre- and postoperative uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), and spherical equivalents (SE) were compared. RESULTS: The mean age of the participants was 68 ± 12.7 years, and the mean follow-up time was 30.7 ± 14.8 months. The mean BCVA improved significantly from 0.58 ± 0.4 at baseline to 0.44 ± 0.41 after the operation (P = 0.008). The spherical equivalent changed insignificantly from -0.13 ± 1.55 preoperatively to -0.6 ± 1.88 (P = 0.724) at the last visit. Postoperative complications were transient pigmented precipitates in five cases and raised intraocular pressure in one case. CONCLUSION: Aphakic Artisan IOLs are attractive alternatives in complicated cataract surgery without sufficient capsular bag support.