Change of Pupil Diameter after Cataract Surgery or After-Cataract Surgery.
- Author:
Hyojin KIM
1
;
Hyun Jin KIM
;
Choun Ki JOO
Author Information
1. Laboratory of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
After-cataract;
Cataract;
Photopic adaptation;
Pupil diameter;
Scotopic adaptation
- MeSH:
Cataract*;
Dark Adaptation;
Fibrosis;
Humans;
Lasers, Solid-State;
Prospective Studies;
Pupil*
- From:Journal of the Korean Ophthalmological Society
2005;46(1):51-56
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the change of pupil diameter following cataract surgery or after-cataract surgery and the dependence of this change on the opacity at photopic and scotopic adaptation. METHODS: Thirty-five eyes with cataract and 32 eyes with after-cataract were evaluated prospectively. The pupil diameter was measured at 220 lux (photopic) and 0.05 lux (scotopic) using a pupillometer. Cataract patients were examined preoperatively, and at 1 week and 2 months postoperatively, and after-cataract patients were examined preoperatively, and at 1 week postoperatively. The lens opacity was classified as opacity degree and the after-cataract was divided into pearl and fibrosis type. RESULTS: Pupil diameter of cataract patients was reduced after surgery at photopic and scotopic adaptation (p<0.05). The pupil diameter of eyes with severe opacity degree was 4.3 +/- 1.1 mm and 5.0 +/- 1.1 mm at photopic and scotopic adaptation, respectively, and was larger than eyes with mild opacity degree (3.9 +/- 1.1 mm and 4.5 +/- 1.1 mm, respectively, p<0.05). At photopic and scotopic adaptation, pupil diameter of after-cataract patients was reduced by Nd: Yag laser (p<0.05). The pupil diameter of eyes with fibrosis type, 4.6 +/- 1.0 mm, was significantly smaller than that of eyes with pearls type (5.1 +/- 1.1 mm, p<0.05). CONCLUSIONS: The pupil diameter of eyes with severe opacity degree was larger that of eyes with mild opacity degree. In after-cataract patients, pupil diameter was significant different depending on opacification type at scotopic adaptation and it was reduced after Nd: Yag laser.
