10-Hz flash visual evoked potentials predict post- XXXX extraction visual acuity.

@entity1 @entity260 @entity231
@entity231 @entity1 suspected of having disease which might interfere with good postoperative visual function were referred for evaluation. Monocular steady-state luminance visual evoked potentials (VEPs) were elicited with closed eyes at a stimulus rate of 10 flashes/sec. VEPs were rated as either normal or abnormal. @entity1 with normal VEPs were predicted to have an acuity of 6/15 (20/50) or better. @entity1 with abnormal VEPs were predicted to have acuities of 6/18 (20/60) or worse. Postoperative acuities were determined for all @entity1 who underwent surgery and who had no intraoperative or early @entity260 . The association of preoperative VEPs and observed postoperative acuities were quantitatively compared by a 2 x 2 contingency table for the 59 eyes which met these criteria. The chi-square was significant (p less than 0.001). The overall accuracy of prediction was 76%. Accuracy was 80% for @entity1 with a preoperative acuity of 6/60 (20/200) or better and 75% for those whose postoperative acuity was 6/120 (20/400) or worse. This difference was not statistically significant.
