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A.A. P. Minello, J.A. Prata Junior, A. Paranhos Junior, P.A. A. Mello; Anatomic and Functional Evaluation of Optic Disk and Retinal Nerve Fiber Layer After Posterior Capsulotomy . Invest. Ophthalmol. Vis. Sci. 2005;46(13):3747.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose:To evaluate the findings of frequency doubling technology perimetry(FDT), scanning laser polarimetry(GDx) and confocal scanning laser ophthalmoscopy(HRT) after posterior capsulotomy in patients treated or not with apraclonidine. Methods: 55 pseudophaciks eyes with posterior capsulotomy were submited posterior capsulotomy with laser Yag. The patients were selected of random form. Group I received topic apraclonidine0,5% and group II(control) had placedo. Intraocular pressure (IOP) was taken by hidden form, before procedure and after 10', 1h, 2h and 1 week. The FDT, GDx and HRT were performed between 1 and 2h after procedure and by the end of first week. Pachymeter(P) and specular microscopy(SM) were performed before and after yag capsulotomy. Statistical analysis: Student's t test, Fisher's exact test, and ANOVA. Results: There was no statistical difference for age(p=0,322), color(0,238), sex (p=0,789), energy(p=0,521), SM(p=0,751), IOP before procedure and IOP after at 10 minutes, 2h and 1 week between groups. There was a statistically significant difference in IOP values between treated group(12,8±2,7mmHg) and the control (14,6±2,6mmHg) 1 hour after. After 1 week, in both groups, there was increase in FDT MD (p=0,011), GDx Superior ratio (p=0,046), HRT Rim volume (p=0,048) and HRT Reference height (p=0,030). Only in controls, measurements of 1 hour and 1 week statistically differed for HRT disk area (p=0,040), HRT cup volume (p=0,035), HRT linear cup/disk ratio (p=0,050) maximum cup death (p=0,047) and HRT cup shape measure (p=0,013). Conclusions:FDT, GDx, HRT showed statistically significant differences after posterior capsulotomy, mainly in the control group.
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