The Change of Visual Evoked Potential in Patients with Myopia in Correction of Refraction.
- Author:
Seong Min LEE
1
;
Chul KIM
;
Jae Ki AHN
Author Information
1. Department of Rehabilitation Medicine, Inje University College of Medicine, Korea. rehrf@freechal.com
- Publication Type:Original Article
- Keywords:
Refraction;
Acuity;
VEP;
P100 latency
- MeSH:
Evoked Potentials, Visual*;
Humans;
Male;
Myopia*;
Visual Acuity
- From:Journal of the Korean Academy of Rehabilitation Medicine
2002;26(6):734-738
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: Multiple factors including age, sex, habituation, refraction, cooperation and technical variables are associated with P100 latency of Visual evoked potential (VEP). So we tried to evaluate the P100 latency of visual evoked potential according to refraction. METHOD: We studied 28 patients (12 males, 16 females) with myopia. Subjects were divided into 3 groups (mild, moderate, severe myopia) according to refraction and we evaluated the results of VEP studies. RESULTS: Mean values of refraction and latency (P100) of naked eyes were -4.27 D, 103.95 msec. and those of corrected eyes (in glasses) were -0.25 D, 100.59 msec. Respectively, in mild, moderate and severe myopia, the each P100 latency of naked eyes were 101.27 msec, 102.59 msec, 107.99 msec and those of corrected eyes were 98.33 msec, 100.58 msec, 102.19 msec respectively (p<0.05). There was significant negative correlation between refraction and P100 latency in myopia. CONCLUSION: Our results suggested that there were significant changes in VEP (P100 latency) according to refraction. In performing the VEP study, we should consider the refraction and visual acuity.
