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KMID : 0360220170580060712
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Journal of the Korean Ophthalmological Society
2017 Volume.58 No. 6 p.712 ~ p.717
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Quantitative Pupillometry of the Pupillary Light Reflex in Koreans
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Bak Eun-Oo
Yoo Yung-Ju
Yang Hee-Kyung
Hwang Jeong-Min
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Abstract
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Purpose: To determine the normal ranges of various indexes of the pupillary light reflex measured by automated pupillometry in Koreans.
Methods: We retrospectively analyzed 90 healthy adults who did not have any ocular diseases other than refractive errors. The direct pupillary light reflex was measured with an automated dynamic pupillometer (PLR-200, NeurOptics Inc., Irvine, CA, USA). A total of 7 indices were measured as follows; the maximum and minimum pupil diameters, constriction latency, constriction ratio, maximum constriction velocity, average constriction velocity and average dilation velocity.
Results: There were no significant differences in quantitative indexes of the pupillary light reflex between fellow eyes. A significant decrease in maximum pupil diameter, minimum pupil diameter, maximum constriction velocity, average constriction velocity and average dilation velocity were observed with aging. In contrast, a significant increase in constriction latency was observed with aging. There were no differences in quantitative pupil measurements according to gender (p < 0.001).
Conclusions: Quantitative measurements of the pupillary light reflex by dynamic pupillometry showed no significant differences between fellow eyes. A significant decrease in pupil size, constriction velocity and dilation velocity, and an increase in pupil constriction latency were observed with aging.
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KEYWORD
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Pupil, Pupillary reflex, Pupillometer
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