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KMID : 1011420180230010025
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Journal of Korean Ophthalmic Optics Society
2018 Volume.23 No. 1 p.25 ~ p.30
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Correlation of Contrast Sensitivity with Transient Visual Recognition
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Kim Sang-Hyun
Shim Hyun-Suk
Seo Jae-Myoung
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Abstract
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Purpose: The purpose od this study is to investigate the correlation of contrast sensitivity (CS) with transient visual recognition (TVR) and provide the baseline data of visual perception for motion.
Methods: The CS and TVR with the variation of exposure duration were found targeting 39 adults. The CS measurement was conducted at 3 cpd with the exposure duration of 50 ms, 200 ms, 366 ms and 516 ms, while the TVR was found at 0.5 cpd with 10 ms and 20 ms.
Results: The CS for men and women was 117.19±31.48 and 138.14±37.39 with 366ms, respectively. It showed that the CS for women was higher than the one for men (p<0.05). The TVR for all subjects showed 91.6±7.7 with 5 digits and 76.6±14.4 with 6 digits at 10 ms. At 20 ms with 5 digits it showed 94.7±6.2 with 5 digits. Consequently, it all had a significant difference for each other (p<0.05). There were positive correlations of CS at 50 ms with TVR at 10 ms with 5 digits (r = 0.361) and 6 digits (r = 0.312), at 20 ms with 5 digits (r = 0.35).
Conclusions: There is a good correlation between CS and TVR. It is strongly recommended to take CS into account as well as TVR in future when it comes to evaluate the visual perception for motion.
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KEYWORD
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Contrast sensitivity, Transient visual recognition, Tachistoscope, Visual perception for motion, Spatial frequency, Temporal frequency
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