J Korean Ophthalmol Soc.  2010 Oct;51(10):1392-1397.

Pattern VEP in Adult Amblyopic Patients Requested From Military Service

• Yoo WS
• Park YJ
• Yoo JM

Abstract

PURPOSE
To evaluate the pattern VEP in adult amblyopic patients seen in consultation for ophthalmic evaluation as a past of physical examinations for conscription.
METHODS
We retrospectively analyzed, 67 men, 20-year-old or older, who had pattern VEP done for the diagnosis of amblyopia from January 2004 to May 2009. P100 latency and P100 amplitude were analyzed.
RESULTS
Thirteen patients were non-amblyopic, and 54 patients had amblyopia. Binocular amblyopia and monocular amblyopia were found in 23 and 31 patients, respectively. In the binocular amblyopic patients, four patients were hyperopic, seven patients were myopic, and 12 patients were astigmatic amblyopia. In the monocular amblyopic patients, 15 patients were anisometropic, 12 patients were strabismic, and four patients had organic amblyopia. The value of P100 latency and P100 amplitude were statistically significantly different between non-amblyopic and amblyopic eyes, with check size of 32x32. However, the types of amblyopia among the patients were not different at a statistically significant level. Visual acuity and P100 amplitude were significantly positively correlated.
CONCLUSIONS
VEP might be a useful tool for diagnosis of adult amblyopia, especially using a 32x32 check size. This tool may impart the ability to decide relationship between amblyopia and visual acuity by analyzing P100 latency and amplitude values.

Keyword

Adult; Amblyopia; Visual evoked potential (VEP)

MeSH Terms

Adult
Amblyopia
Eye
Humans
Male
Military Personnel
Physical Examination
Retrospective Studies
Telescopes
Visual Acuity
Young Adult

Figure

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  Figure 1. Correlation between visual acuity, and P100 amplitude and P100 latency by different check size. Visual acuity and P100 amplitude by check size 16×16 (A) and 32×32 (C) have positive correlation which is statistically significant (* p<0.05). Visual acuity and P100 latency by check size 16×16 (B) and 32×32 (D) have negative correlation which is statistically non-significant (p>0.05).

Reference

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