The Potential Acuity Meter to Predict Postoperative Visual Acuity after Cataract Surgery.
- Author:
Seung Tak OH
1
;
Kang Ho CHOI
;
Seung Jung LIM
;
Hong Bok KIM
Author Information
1. Department of Ophthalmology, College of Medicine, Yonsei University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Cataract;
Potential acuity meter;
Visual acuity
- MeSH:
Cataract Extraction;
Cataract*;
Pupil;
Visual Acuity*
- From:Journal of the Korean Ophthalmological Society
1996;37(4):591-595
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The potential acuity meter(PAM) has been reported to be a useful instrument for predicting postoperative visual acuity after cataract extraction surgery. Forty nine eyes were tested with PAM before surgery, and the best postopertive visual acuity was obtained. The PAM accurately predicted the postoperative visual acuity to within three lines in 90.0% of the cases. When the test is in error, the tendency is for the PAM to underestimate the final acuity rather than to overestimate. Especially under undilated pupil, in dense cataracts (<20/200),and,in posterior subcapsular and cortical cataracts, the PAM tends to underestimate further.
