Refraction, intraocular pressure and anterior chamber depth changes after Nd:YAG laser treatment for posterior capsular opacification in pseudophakic eyes

Abstract

Purpose:The aim was to investigate the effect of Nd:YAG capsulotomy on refraction, intraocular pressure and anterior chamber depth changes and complications of Nd:YAG laser treatment for posterior capsular opacification in pseudophakic eyes. Methods: Our study includes 26 eyes (23 patients) with posterior capsular opacification after uncomplicated phacoemulsification surgery and intraocular lens implantation. Complete ocular examinations were performed for all patients. The visual acuity, intraocular pressure and anterior chamber depth measurements were obtained in all examinations. Nd:YAG capsulotomy was measured in all patients. Eyes received one drop of aproclonidine 0.5 % before and immediately after YAG laser capsulotomy. Data were analysed statistically. Results: Mean patient age was 53.73 Ϯ 13.53 years. Before Nd:YAG capsulotomy mean anterior chamber depth was 4.03 Ϯ 0.58 mm and in the first day after capsulotomy the mean value was 4.02 Ϯ 0.46 mm. Mean spherical equivalent refraction before laser treatment was -0.52 D and on the first day after laser treatment was -0.49 D. An improvement in visual acuity was achieved in all cases. Before Nd:YAG capsulotomy mean visual acuity was 0.38 Ϯ 0.13 and on the first day after capsulotomy, the mean value was 0.93 Ϯ 0.11, the difference of which was statistically significant. There were no statistically significant differences between the anterior chamber depth and intraocular pressure measurements before laser capsulotomy and on the first day, first month and third month after laser. Conclusion: Nd:YAG laser capsulotomy is an effective and safe method of treatment of posterior capsular opacification.

Evaluation of the impact of Nd:YAG laser posterior capsulotomy on ocular pulse amplitude and anterior segment morphology

“…Waseem and Khan reported that higher YAG laser energy had significantly higher chances of raising IOP. Similar to our results, in most of the studies, significant IOP elevations were not observed after Nd‐YAG laser posterior capsulotomy .…”

The effects of Nd:YAG laser capsulotomy on anterior segment parameters in patients with posterior capsular opacification

“…Keratometric astigmatism and spherical equivalents did not change after capsulotomy, whereas cylindrical errors decreased. There are various reports on the effects of Nd:YAG capsulotomy on refraction, finding no change or a hyperopic shift in spherical equivalents; however, in none of the prior studies analysing the refractive changes due to Nd:YAG capsulotomy were the refractive powers evaluated separately as spherical and cylindrical errors. Spherical equivalents may conceal the real refractive alterations due to changes in cylindrical power.…”

Optic coherence tomography measurement of choroidal and retinal thicknesses after uncomplicated YAG laser capsulotomy

“…Increased IOP following YAG is the most common complication; despite prophylactic treatment its incidence was observed as between 15%-30% in some studies (18,19) . The short-and long-term results are unclear in studies (19)(20)(21) examining IOP changes after YAG capsulotomy. Whether or not the choroid is influenced as a result of pressure fluctuations after YAG capsulotomy should therefore be subject to scrutiny.…”