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Journal of Ophthalmology
Volume 2015, Article ID 401281, 10 pages
http://dx.doi.org/10.1155/2015/401281
Clinical Study

The Success of Cataract Surgery and the Preoperative Measurement of Retinal Function by Electrophysiological Techniques

1Department of Clinical Aerospace Medicine, Fourth Military Medical University, Xi’an 710032, China
2Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China

Received 25 August 2015; Accepted 20 September 2015

Academic Editor: Van C. Lansingh

Copyright © 2015 Jing An et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To study the effect of different electrophysiological methods to evaluate retinal function prior to cataract surgery. Methods. Cataract patients who had no significant other eye disease were chosen. VA, pattern visual evoked potential (PVEP), electroretinogram (ERG), and multifocal electroretinogram (mfERG) responses were measured from 150 cataract patients and 20 control subjects. Results. When the preoperative VA was more than 0.3 in cataract patients, the amplitude of PVEP was not significantly different between cataract and control subjects. The amplitude of central point mfERG was significantly lower in cataract patients compared with control group from HM to 0.8 of preoperative VA. The 95% confidence intervals (CIs) of the amplitudes of center point mfERG were calculated for a range of preoperative VA values. Most of the patients within 95% CI of the center point mfERG had a postoperative VA more than 0.5. Conclusions. The amplitude of central point mfERG in cataract patients was the most relevant parameter to the preoperative VA compared with PVEP and ERG. The 95% CI of the amplitude of central point mfERG for each level of VA could help to evaluate preoperative macular function which is used to predict the outcome of cataract surgery.