| Change of Pupil Diameter after Cataract Surgery or After-Cataract Surgery. |
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Hyojin Kim, Hyun Jin Kim, Choun Ki Joo |
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Laboratory of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr |
| 백내장 수술 또는 후발성백내장 수술 후 동공크기의 변화 |
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김효진,김현진,주천기 |
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Laboratory of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea |
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Correspondence:
Hyojin Kim, M.S. |
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| 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. |
| Key Words:
After-cataract;Cataract;Photopic adaptation;Pupil diameter;Scotopic adaptation |
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