Analysis of Korean Retinal Specialists' Opinions on Implanting Diffractive Multifocal Intraocular Lenses in Eyes with Underlying Retinal Diseases.

Multifocal intraocular lenses (MF-IOLs) are increasingly implanted as the need for good near- and intermediate-distance vision increases. Although retinal disease is known to be a relative contraindication for MF-IOL implantation, there are no detailed guidelines for MF-IOL implantation with respect to the type and severity of retinal diseases/statuses. In this study, because retinal diseases can affect the performance of MF-IOLs, we analyzed the opinions of 111 retinal specialists, who were members of the Korean Retina Society, on the implantation of diffractive MF-IOLs in eyes with 15 retinal diseases/statuses using a web-based survey. For each underlying condition, retinal specialists were asked to rate their approval regarding implantation of MF-IOLs on a scale from 1 (completely disapprove) to 7 (completely approve), under the assumption that there were no known contraindications except for a given retinal disease/status. As a result, retinal specialists disapproved MF-IOL implantation (median value of Likert score < 4) in the eyes with wet age-related macular degeneration, dry age-related macular degeneration with geographic atrophy, proliferative diabetic retinopathy, nonproliferative diabetic retinopathy with macular edema, previous macula-off retinal detachment, previous retinal vein occlusion, and epiretinal membrane, but the scores varied by disease/status. The factors that affected the specialists' opinions were the type of practice and the frequency of MF-IOL implantation (p = 0.013 and p = 0.021, respectively; one-way ANOVA).

Risk factors for pseudophakic retinal detachment after intraocular lens scleral fixation with or without pars plana vitrectomy.

PURPOSE: To identify the risk factors of pseudophakic retinal detachment after intraocular lens scleral fixation. METHODS: We retrospectively reviewed the medical records of all patients who underwent intraocular lens implantation with scleral fixation and had at least 6 months of follow-up between January 2002 and December 2007. The risk factors for pseudophakic retinal detachment were investigated using various surgical variables. To find the significant predictors among the variables, we carried out binary logistic regression analysis with a backward selection method based on likelihood ratios. RESULTS: Data from 395 eyes were analyzed. The pseudophakic retinal detachment rates were 8.46% (11 of the 130 eyes) in patients treated with pars plana vitrectomy (PPV) and 3.02% (8 of the 265 eyes) in patients treated without the PPV. Performing PPV (P = 0.023) was the only significant risk factor for pseudophakic retinal detachment after intraocular lens scleral fixation by logistic regression analysis. The odds ratio for PPV was 2.970 (95% confidence interval: 1.164-7.574). CONCLUSION: Performing PPV could be a risk factor of the pseudophakic retinal detachment after intraocular lens scleral fixation. If there is a choice, it should be decided carefully whether a PPV is performed at the time of intraocular lens scleral fixation.

Evaluation of the efficacy of vitrectomy for persistent diabetic macular edema and associated factors predicting outcome.

PURPOSE: To evaluate the efficacy of vitrectomy for persistent diabetic macular edema after laser photocoagulation or intravitreal triamcinolone injections and to determine the demographic and ocular factors that influence functional and anatomical outcomes. METHODS: We retrospectively evaluated 55 eyes (51 patients) that had persistent diffuse macular edema after laser photocoagulation or intravitreal triamcinolone injections. We compared preoperative and postoperative best corrected visual acuity and macular thickness by Optical Coherence Tomography and investigated factors including patient's age, presence of vitreomacular traction, grade of diabetic retinopathy, and intraoperative internal limiting membrane removal that may influence the surgical results. RESULTS: The mean preoperative BCVA (log MAR) was 0.91+/-0.40 (0.8-1.2). The BCVA improved to 0.72+/-0.39 (0.3-1.2). The mean preoperative macular thickness was 440+/-130 (202-805) micrometer and the mean macular thickness decreased to 306+/-97 (136-580) micrometer postoperatively. The eyes showed statistically significant improvement in BCVA and central macular thickness (p<0.001). Preoperative better BCVA was associated with an improved postoperative visual acuity. (p=0.04). No other covariates were found to be statistically significant factors for prognosis of postoperative BCVA. CONCLUSIONS: In eyes with persistent diabetic macular edema after laser or IVTA injections, vitrectomy was effective for decreasing macular thickness and improvement of vision. The visual improvement after vitrectomy was associated with the preoperative better BCVA.

Arteriovenous sheathotomy for persistent macular edema in branch retinal vein occlusion.

PURPOSE: To evaluate the efficacy of arteriovenous (AV) sheathotomy with internal limiting membrane peeling for persistent or recurrent macular edema after intravitreal triamcinolone injection and/or laser photocoagulation in branch retinal vein occlusion. METHODS: Twenty-two eyes with branch retinal vein occlusion (BRVO) with recurrent macular edema underwent vitrectomy with AV sheathotomy and internal limiting membrane peeling. All eyes had previous intravitreal triamcinolone injection and/or laser photocoagulation for macular edema. The best corrected visual acuity (BCVA), fluorescein angiography and optical coherence tomography (OCT) before and after surgery were compared. RESULTS: The mean preoperative BCVA (log MAR) were 0.79 +/- 0.29 and postoperative BCVA (log MAR) at 3 months was 0.57 +/- 0.33. And improvement of visual acuity > or = 2 lines was observed in 10 eyes (45%). The mean preoperative fovea thickness measured by OCT was 595.22 +/- 76.83 microm (510-737 microm) and postoperative fovea thickness was 217.60 +/- 47.33 microm (164-285 microm). CONCLUSIONS: Vitrectomy with AV sheathotomy can be one treatment option for the patients with recurrent macular edema in BRVO.

Result of early vitrectomy for endogenous Klebsiella pneumoniae endophthalmitis.

PURPOSE: To determine the role of pars plana vitrectomy (PPV) in the treatment of Klebsiella pneumoniae endogenous endophthalmitis. METHODS: Records of seven consecutive patients (10 eyes) diagnosed with Klebsiella endogenous endophthalmitis were retrospectively reviewed. RESULTS: Five patients (71%) had diabetes, and four (57%) had a liver abscess as the source. In most cases, the inflammation progressed within days and resulted in decreased vision worse than hand motions and a total vitreous abscess, despite systemic and intravitreal antibiotic injections. A PPV with subretinal abscess drainage and silicone oil tamponade was performed within 2 weeks. After 6 months, the retina remained attached in all eyes (100%), and vision was counting fingers or better in five eyes (50%). Two eyes recovered visual acuity between 20/63 and 20/125. CONCLUSIONS: Physicians should be alerted to the development of endogenous endophthalmitis in patients with Klebsiella septicemia, especially in diabetics with a hepatobiliary abscess. Aggressive therapy, including early vitrectomy with antibiotic injection, may improve the final outcome in this otherwise devastating ocular condition.