The Effect of Two Different Opening Patterns of Neodymium:YAG Laser Posterior Capsulotomy on Visual Function.

Kim, Youngkook; Park, Jongseok

doi:2012.53.3.390

J Korean Ophthalmol Soc > Volume 53(3); 2012 > Article

Randomized Controlled Trial

Journal of the Korean Ophthalmological Society 2012;53(3):390-395.
DOI: https://doi.org/10.3341/jkos.2012.53.3.390 Published online March 15, 2012.

The Effect of Two Different Opening Patterns of Neodymium:YAG Laser Posterior Capsulotomy on Visual Function.

Youngkook Kim, Jongseok Park

Department of Ophthalmology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea. pjs4106@eulji.ac.kr

두 가지 다른 절개 방법의 Nd:YAG 레이저 후낭절개술이 시기능에 미치는 영향

김영국⋅박종석

Department of Ophthalmology, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea

Abstract

PURPOSE
To investigate the effects of two different opening patterns in neodymium:yttrium-aluminum-garnet (Nd:YAG) laser posterior capsulotomy on visual function. METHODS: A randomized prospective study was conducted on 62 pseudophakic eyes from 50 patients with posterior capsular opacification (PCO). Groups A and B underwent laser posterior capsulotomy with a cruciate opening and a modified circular opening, respectively. The best corrected visual acuity (BCVA), contrast sensitivity, and glare sensitivity were measured before and after laser posterior capsulotomy in both groups. The occurrences of intraocular lens (IOL) pittings were investigated and compared between the two groups. RESULTS: After laser capsulotomy, there were significant increases in BCVA, contrast and glare sensitivity in both groups and no significant differences between the two groups. However, group A had significantly more patients with three or more IOL pittings within a 1.5-mm radius from the IOL center (p = 0.047). In group A, these patients had significantly less contrast sensitivity (p = 0.023 in 1.6 cpd) and glare sensitivity (p = 0.043 in 1.6 cpd) than did patients with two or fewer IOL pittings. CONCLUSIONS: Nd:YAG laser posterior capsulotomy using a modified circular opening can be considered an effective method to manage PCO.

Key Words: Contrast sensitivity;Glare sensitivity;Neodymium:YAG laser posterior capsulotomy;Opening patterns