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Graham A Lee - One of the best experts on this subject based on the ideXlab platform.
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retropupillary iris claw Intraocular Lens for aphakia
Clinical and Experimental Ophthalmology, 2012Co-Authors: Eve Y Hsing, Graham A LeeAbstract:Background: To assess outcomes of the iris claw Intraocular Lens implanted in the retropupillary position for correction of aphakia without adequate capsular support. Design: Retrospective study of patients consulted at two private practices and a tertiary public hospital clinic in Brisbane, Queensland. Samples: Thirty-two consecutive patients who underwent posterior chamber insertion of the iris claw Intraocular Lens alone or in combination with other procedure/s by the same consultant ophthalmologist (GL). Methods: Lens power was calculated using an A-constant of 117.0. Main Outcome Measures: Clinical examination. Results: Thirty-four eyes in 32 patients (23 male, 9 female) were included in the study. Indications for surgery were pseudophakic bullous keratopathy (n=14), aphakia from previous Lens extraction/Lensectomy (n=9), subluxation of Intraocular Lens (n=7), cataract extraction (n=2), explantation of anterior chamber Intraocular Lens due to uveitis (n=1) and for Baerveldt tube insertion (n=1). Follow-up duration ranged from 1 to 68months. Of the 26 eyes followed for at least 6months, the final vision improved in 69% (n=18), remained unchanged in 8% (n=2) and worsened in 23% (n=6). Final visual acuity was 6/12 or better in 58% (n=15). Complications included iris trauma/defect (n=8), pupil irregularity/ovalization (n=6), microhyphaema (n=2) and Lens decentration (n=2). Conclusion: Implantation of the iris claw Intraocular Lens in the retropupillary position is a useful technique for correction of aphakic eyes with sufficient iris support, avoiding the corneal complications of an anterior chamber Intraocular Lens and the surgical challenge of a sutured posterior chamber Intraocular Lens. © 2012 The Authors. Clinical and Experimental Ophthalmology
Carl Kupfer - One of the best experts on this subject based on the ideXlab platform.
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The Madurai Intraocular Lens Study IV: posterior capsule opacification
American journal of ophthalmology, 2000Co-Authors: N. Venkatesh Prajna, Leon B Ellwein, Sivasubramaniam Selvaraj, K Manjula, Carl KupferAbstract:Abstract PURPOSE: To estimate the cumulative incidence of posterior capsule opacification 4 years after surgery in patients who participated in the Madurai Intraocular Lens Study and had extracapsular cataract extraction with posterior chamber Intraocular Lens implantation. METHODS: In the Madurai Intraocular Lens Study, 1,700 patients with best-corrected visual acuity 20/120 or worse in the better eye had extracapsular cataract extraction with posterior chamber Intraocular Lens implantation, and 1,474 (86.7%) of these completed the 1-year follow-up examination. From this group of 1,474 pseudophakic patients, 400 were randomly selected for reexamination 4 years after the original surgery. The eye that was operated on was examined by an ophthalmologist who was involved in the 1-year follow-up examinations and posterior capsule opacification grading. A grading of I to III was used to reflect the degree of opacification. With grades II and III, posterior capsule opacification detectable with an undilated pupil was present in the central axis. RESULTS: Three hundred twenty-seven (81.8%) of the selected population were examined between October 1997 and December 1998. Thirty-four (8.5%) were confirmed as being deceased, and 39 (9.8%) were unavailable for follow-up. The median age was 60 years, and 57.2% were women. The 4-year incidence of grade II or III posterior capsule opacification, including eyes already treated with laser capsulotomy, was 13.1% (95% confidence interval [CI], 9.7% to 17.3%). Each year of increased age was associated with a decreased risk of posterior capsule opacification (odds ratio, 0.96; 95% CI, 0.92 to 1.00). Based on best-corrected visual acuity of 20/40 or worse without co-existing pathology, the 4-year incidence of posterior capsule opacification was 13.5%. CONCLUSION: Because patients with relatively mature cataracts routinely receive extracapsular cataract extraction with posterior chamber Intraocular Lens implantation instead of the traditional intracapsular extraction, the subsequent need for laser capsulotomy may be less than that anticipated, based on previous reports.
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the madurai Intraocular Lens study i a randomized clinical trial comparing complications and vision outcomes of intracapsular cataract extraction and extracapsular cataract extraction with posterior chamber Intraocular Lens
American Journal of Ophthalmology, 1998Co-Authors: G Natchiar, R D Thulasiraj, Andredominique Negrel, Shrikant I Bangdiwala, Raheem Rahmathallah, Venkatesh N Prajna, Leon B Ellwein, Carl KupferAbstract:Purpose: The Madurai Intraocular Lens Study (MIOLS) was designed to compare safety, efficacy, and quality of life outcomes after either intracapsular cataract extraction with aphakic glasses (ICCE-AG) or extracapsular cataract extraction with posterior chamber Intraocular Lens (ECCE/ PC-IOL). Methods: The Madurai Intraocular Lens Study was a nonmasked randomized controlled clinical trial conducted at a single hospital. Thirty-four hundred patients with age-related cataracts and having a best-corrected visual acuity less than or equal to 20/120 in the better eye were randomly assigned to either of the two cataract operative procedures. The main clinical outcomes were safety (complication rates) and efficacy (bestcorrected visual acuity at 1 year equal to or better than 20/40. In addition, a subset of 1,700 trial participants received questionnaires before surgery, at 6 months after surgery, and at 1 year after surgery to measure visual functioning and visionrelated quality of life. Results: Details of study design, study organization, clinical and quality of life outcome variables, sample size calculations, patient eligibility criteria and recruitment, randomization and masking, participant flow, adherence to followup, quality assurance, and statistical methods are presented. Conclusions: The Madurai Intraocular Lens Study has sufficient power to detect clinically significant differences between the treatment options. There were no statistically significant differences between the two treatment groups for any of the major study variables at baseline. A high level of quality assurance was maintained throughout the October 1993 to June 1996 study period. The results should be applicable to all settings where the requisite expertise and resources are present.
Liu Jian - One of the best experts on this subject based on the ideXlab platform.
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iris claw Intraocular Lens and scleral fixated posterior chamber Intraocular Lens implantations in correcting aphakia a meta analysis
Investigative Ophthalmology & Visual Science, 2017Co-Authors: Wu Jing, Liang Guanlu, Zheng Qianyin, Li Shuyi, He Fengying, Liu Jian, Xu WenAbstract:Purpose A meta-analysis to compare iris-claw Intraocular Lens (IC-IOL) and scleral-fixated posterior chamber Intraocular Lens (SF-PCIOL) implantations in correcting aphakia without sufficient capsular support. Methods Eligible studies were collected through PubMed, Web of Science, Embase, and the Cochrane library. The pooled relative risks (RR), pooled standardized mean difference (SMD), and their 95% confidence interval of the eligible studies were then calculated. Seven studies met our inclusion criteria, involving 232 and 158 eyes in IC-IOL and SF-PCIOL groups, respectively. Results The pooled SMD of the mean postoperative corrected distance visual acuity (CDVA) (logMAR) was -0.25. The pooled RR of the eyes achieving 20/40 or better postoperatively was 1.16. The pooled SMD of the surgical time was -2.97. The pooled RR of the surgical complications was 0.86. The pooled RR of IOL dislocation, retinal detachment (RD), and cystoid macular edema (CME) between the two groups were 0.22, 0.63, and 0.64. Conclusions Implantation of IC-IOL has a more simple procedure and shorter learning curve than SF-PCIOL implantation in correcting aphakia without sufficient capsular support.
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iris claw Intraocular Lens and scleral fixated posterior chamber Intraocular Lens implantations in correcting aphakia a meta analysis
Investigative Ophthalmology & Visual Science, 2017Co-Authors: Wu Jing, Liang Guanlu, Zheng Qianyin, Li Shuyi, He Fengying, Liu JianAbstract:A meta-analysis to compare iris-claw Intraocular Lens (IC-IOL) and scleral-fixated posterior chamber Intraocular Lens (SF-PCIOL) implantations in correcting aphakia without sufficient capsular support.Eligible studies were collected through PubMed, Web of Science, Embase, and the Cochrane library. The pooled relative risks (RR), pooled standardized mean difference (SMD), and their 95% confidence interval of the eligible studies were then calculated. Seven studies met our inclusion criteria, involving 232 and 158 eyes in IC-IOL and SF-PCIOL groups, respectively.The pooled SMD of the mean postoperative corrected distance visual acuity (CDVA) (logMAR) was -0.25. The pooled RR of the eyes achieving 20/40 or better postoperatively was 1.16. The pooled SMD of the surgical time was -2.97. The pooled RR of the surgical complications was 0.86. The pooled RR of IOL dislocation, retinal detachment (RD), and cystoid macular edema (CME) between the two groups were 0.22, 0.63, and 0.64.Implantation of IC-IOL has a more simple procedure and shorter learning curve than SF-PCIOL implantation in correcting aphakia without sufficient capsular support.
Robert H Osher - One of the best experts on this subject based on the ideXlab platform.
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rescue technique for salvaging toric Intraocular Lens alignment
Journal of Cataract and Refractive Surgery, 2012Co-Authors: Amaryllis Avakian, Robert H OsherAbstract:Accurate alignment of a toric Intraocular Lens (IOL) is a requisite to achieving the intended reduction in astigmatism at the time of cataract surgery. However, it requires a reasonably clear view of the limbal vascular anatomy, which is sometimes altered by chemosis from a subconjunctival anesthetic injection or a hemorrhage. We describe a technique that can quickly restore vascular anatomy and facilitate toric IOL alignment.
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phakic posterior chamber Intraocular Lens pupillary block
Journal of Cataract and Refractive Surgery, 2002Co-Authors: Stephen Bylsma, Alan H Zalta, Eugene Foley, Robert H OsherAbstract:A 49-year-old woman developed bilateral pupillary block after implantation of a phakic posterior chamber Intraocular Lens despite patent-appearing but nonfunctional peripheral iridotomies. This case serves as a basis to identify clinical signs that distinguish this diagnosis from other causes of elevated Intraocular pressure and types of pupillary block.
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late complications with Intraocular Lens dislocation after capsulorhexis in pseudoexfoliation syndrome
Journal of Cataract and Refractive Surgery, 2002Co-Authors: Samuel Masket, Robert H OsherAbstract:We report 3 cases of significant late Intraocular Lens/capsular bag subluxation after uneventful capsulorhexis, endolenticular phacoemulsification, and capsular bag implantation in patients with pseudoexfoliation syndrome.
Wu Jing - One of the best experts on this subject based on the ideXlab platform.
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iris claw Intraocular Lens and scleral fixated posterior chamber Intraocular Lens implantations in correcting aphakia a meta analysis
Investigative Ophthalmology & Visual Science, 2017Co-Authors: Wu Jing, Liang Guanlu, Zheng Qianyin, Li Shuyi, He Fengying, Liu Jian, Xu WenAbstract:Purpose A meta-analysis to compare iris-claw Intraocular Lens (IC-IOL) and scleral-fixated posterior chamber Intraocular Lens (SF-PCIOL) implantations in correcting aphakia without sufficient capsular support. Methods Eligible studies were collected through PubMed, Web of Science, Embase, and the Cochrane library. The pooled relative risks (RR), pooled standardized mean difference (SMD), and their 95% confidence interval of the eligible studies were then calculated. Seven studies met our inclusion criteria, involving 232 and 158 eyes in IC-IOL and SF-PCIOL groups, respectively. Results The pooled SMD of the mean postoperative corrected distance visual acuity (CDVA) (logMAR) was -0.25. The pooled RR of the eyes achieving 20/40 or better postoperatively was 1.16. The pooled SMD of the surgical time was -2.97. The pooled RR of the surgical complications was 0.86. The pooled RR of IOL dislocation, retinal detachment (RD), and cystoid macular edema (CME) between the two groups were 0.22, 0.63, and 0.64. Conclusions Implantation of IC-IOL has a more simple procedure and shorter learning curve than SF-PCIOL implantation in correcting aphakia without sufficient capsular support.
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iris claw Intraocular Lens and scleral fixated posterior chamber Intraocular Lens implantations in correcting aphakia a meta analysis
Investigative Ophthalmology & Visual Science, 2017Co-Authors: Wu Jing, Liang Guanlu, Zheng Qianyin, Li Shuyi, He Fengying, Liu JianAbstract:A meta-analysis to compare iris-claw Intraocular Lens (IC-IOL) and scleral-fixated posterior chamber Intraocular Lens (SF-PCIOL) implantations in correcting aphakia without sufficient capsular support.Eligible studies were collected through PubMed, Web of Science, Embase, and the Cochrane library. The pooled relative risks (RR), pooled standardized mean difference (SMD), and their 95% confidence interval of the eligible studies were then calculated. Seven studies met our inclusion criteria, involving 232 and 158 eyes in IC-IOL and SF-PCIOL groups, respectively.The pooled SMD of the mean postoperative corrected distance visual acuity (CDVA) (logMAR) was -0.25. The pooled RR of the eyes achieving 20/40 or better postoperatively was 1.16. The pooled SMD of the surgical time was -2.97. The pooled RR of the surgical complications was 0.86. The pooled RR of IOL dislocation, retinal detachment (RD), and cystoid macular edema (CME) between the two groups were 0.22, 0.63, and 0.64.Implantation of IC-IOL has a more simple procedure and shorter learning curve than SF-PCIOL implantation in correcting aphakia without sufficient capsular support.