PMID: 18709959Aug 20, 2008Paper

Correlation analysis of pupil light reflex and visual functions after unilateral ocular contusion

Yan ke xue bao = Eye science
Yuwei LiuXiaofeng Lin

Abstract

SUBJECTS AND OBJECTIVE: To measure the quantitative pupil light reflex after unilateral ocular contusion, analyze the correlation of pupil light reflex and other tests of visual function. The pupil light reflex in 26 patients who suffered unilateral ocular contusion was tested by infrared video pupillography, psychophysical and electrophysiological tests including visual acuity, visual field, and visual evoked potentials were also tested. Pupil area, the latency and amplitude of pupil light reflex were recorded. The correlation of the ratio of pupil light reflex amplitude and the differences of visual acuity between 2 eyes in 26 contusion patients was statistically significant. The correlation coefficient r was -0.648. There were significant correlation between amplitude of pupil light reflex and median defect of visual field. The correlation coefficients r were 0.5 and 0.535. The significant correlations were found in the ratio of amplitudes between pupil light reflex and visual evoked potentials. Multiple linear regression analysis showed combining pupil light reflex amplitude and visual evoked potential amplitude could elevate the possibility of predicting visual acuity. Pupil light reflex amplitude measurement is superior t...Continue Reading

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