The Quality Of Vision (Visual Acuity And Point Spread Function) And Endothelial Cells Changes In Cornea Guttata Patients After Cataract Surgery

To evaluate the quality of vision (visual acuity and point spread function) and endothelial cells changes in cornea guttata patients before and after of two types of cataract surgery with implantation of same type of intraocular lenses.

Department of ophthalmology, Specialised Hospital for Active Treatment of Eye Diseases “Zrenieto-Prof Tanev”,

Department of Ophthalmology, IRCCS HUMANITAS Research Hospital, Rozzano /MI/, Italy

We retrospectively evaluated 64 eyes of 32 patients with comparable LOCSIII stage of cataract. The one eye of patient was randomly selected for ultrasound phacoemulsification and the contralateral eye receives the nanosecond laser–assisted cataract. The central endothelial cell density (ECD), coefficient of variation (CoV) in cell size (objective measure of polymegethism), and percentage of hexagonal cells (an index of pleomorphism) were evaluated. Objective measurement of vision has been measured by light scatter using the Optical Quality Analysis System (OSI index) in both groups, before and at 1,3,6,12 months after surgery.

We present the endothelial cell changes observed in two groups before and after surgery. The obtained results from optical quality analysis system for the groups has been discussed. The OSI index of eyes with cornea guttata patients before surgery was compared with that OSI of the same eyes after surgery of the two groups using 2-tailed unpaired t tests. Correlations were examined by using the bivariate Pearson method or, when data were not normally distributed, the Spearman ρ coefficient. P < .05 was considered statistically significant.

The nanosecond cataract surgery presents some advantages in comparison of standard ultrasound phacoemulsification in compromised corneas.