| Comparison of Contrast Sensitivity with ACV (Visual Capacity Analyzer) in Different Types of Posterior Capsular Opacification. |
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Hyun Jin Kim, Hyojin Kim, So Hyun Cho, Beom Jin Cho, Ki Yong Choi, Kyu Hyung Chung, Choun Ki Joo |
1Laboratory of Ophthalmology and Visual Science College of Medicine, The Catholic University of Korea, #505 Panpo-dong, Socho-ku, Seoul, Korea. ckjoo@catholic.ac.kr
2Hangil Ophthalmology Clinic, Korea. |
| 다른 종류의 후낭 혼탁에서 ACV(Visual Capacity Analyzer)를 이용한 대비감도의 비교 |
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김현진 ( Hyun Jin Kim ) , 김효진 ( Hyo Jin Kim ) , 조소현 ( So Hyun Cho ) , 조범진 ( Beom Jin Cho ) , 최기용 ( Ki Yong Choi ) , 정규형 ( Kyu Hyung Chung ) , 주천기 ( Choun Ki Joo ) |
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| Abstract |
PURPOSE
To compare contrast sensitivity (CS) in type and degree of posterior capsule opacification (PCO) in pseudophakic eyes before and after neodymium: YAG capsulotomy. METHODS: Nine eyes with fibrosis-type PCO and 26 with Elschnig-pearl type PCO were examined for best corrected visual acuity (BCVA) and CS before and 1 week after capsulotomy. CS was tested with visual capacity analyzer (ACV) which uses a Landolt ring of 5 different spatial frequencies (SF) under two different conditions of day (100cd/m2) and night (30cd/m2). The patients were divided into two groups based on the BCVA before capsulotomy: Group A, 4 eyes and 18 eyes with below 0.63 in fibrosis-type and pearls-type PCO, respectively; Group B, 5 eyes and 8 eyes with above 0.63 in fibrosis-type and pearls-type PCO, respectively. RESULTS: The patients with PCO had worse BCVA and CS, but these were improved by Nd: YAG capsulotomy. This was not affected by the types and degrees of PCO. In the daytime condition, CS of B group was worse at all SF in patients with pearl-type PCO than in those with fibrosis-type PCO before capsulotomy, except 19 cpd (p<0.05). In the nighttime condition, CS in the two groups showed no difference at all SF (p>0.05). CONCLUSIONS: In the daytime condition, the patients with pearls-type PCO of relatively poor BCVA had lower CS than those with fibrosis-type PCO. |
| Key Words:
Contrast sensitivity;Elschnig-pearl type PCO;Fibrosis-type PCO |
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