PurposeTo assess the relationship between postoperative endothelial cell loss and microcoaxial phaco parameters using Ozil IP (Alcon Laboratories, Inc, Fort Worth, TX) in noncomplicated cataract surgery.MethodsIn this prospective observational study, 120 consecutive cases of cataract patients with different grades of nuclear hardness underwent microcoaxial phacoemulsification through a 2.2-mm clear corneal incision. An Alcon Infinity Vision System with Ozil IP (Alcon Laboratories) was used with an Ozil torsional handpiece and a Kelman-style 45° phacoemulsification tip. Patients underwent preoperative and postoperative central endothelial cell counts.ResultsThe study included 120 cases of age-related cataract whose mean age (standard deviation [SD]) was 59.68 years (9.47). There was a highly statistically significant endothelial cell loss (P < 0.001). The endothelial cell loss ranged 11–1149 cells/mm2 with a median (interquartile range) of 386 cells/mm2 (184.5–686 cells/mm2). The percentage of postoperative ECLoss% ranged from 0.48% to 47.8% with a median (interquartile range) of 15.4% (7.2% to 26.8%). A significant positive correlation was found between the ECLoss% and different phaco parameters. The Spearman’s rank-order correlation coefficient values, rho, (ρ) were as follows: CDE (ρ = 0.425), aspiration time (ρ = 0.176), and volume (ρ = 0.278). Also, ECLoss% was significantly correlated with the grade of nuclear opalescence (Kendall’s tau τ = 0.42).ConclusionMicrocoaxial phacoemulsification was efficient in removing noncomplicated cataracts; however a statistically significant endothelial cell loss was noted, especially with increased nuclear hardness. This endothelial cell loss was mostly related to the increased cumulative dissipated energy (CDE), aspiration time, and volume of balanced salt solution used.
Immediate vitrectomy and intravitreal phacoemulsification is a surgical option in the management of posteriorly dislocated nucleus/lens fragments without much risk of retinal damage. It is relatively safe and most patients achieved a good visual outcome. The risk of postoperative complications including uveitis, secondary glaucoma, and cystoid macular edema could be minimized.
Background: Amblyopia is the commonest childhood vision disorder, most children with amblyopia require refractive correction as well as patching; Evidences for direct retinal changes in amblyopic eyes are still inconclusive and controversial.Objectives: To detect changes in the macula by macular Optical Coherence Tomography (OCT) after part time occlusion in children with amblyopia.
Patients and Methods:Arandomised non controlled study included forty child suffering amblyopia in this study. Best corrected visual acuity (BCVA: 0.1-0.5) were recruited and treated with refractive correction, and part time occlusion (6 hours/day) for one week per year. BCVA and macular thickness were measured by OCT before and after treatment. Factorial repeated-measures analysis of variance was performed to determine the macular thickness in amblyopic eyes changed after amblyopia treatment.
Results:The mean age of children was 8.57±2.52 years. There was a statistically significant difference in the central macular thickness pre & post amblyopia treatment. There was no statistically significant difference for the other macular thickness parameters except for superior quadrant of parapovea where the difference was significantly significant.
Conclusion:The mean of central macular thickness and superior quadrant of parapovea increased after part time occlusion treatment compared to pretreatment. No significant difference in average macular thickness, (nasal, temporal, inferior) parapovea, perifovea, retinal nerve fiber layer (RNFL) thickness and ganglion cell layer (GCL) before and after treatment.
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