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KMID : 1011420160210010023
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Journal of Korean Ophthalmic Optics Society
2016 Volume.21 No. 1 p.23 ~ p.34
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The Changes in Contrast Sensitivity and Glare Sensitivity when Wearing Circle Contact Lenses after the Refractive Surgery
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Kwon Ki-Nam
Park Sang-Hee
Kim So-Ra
Park Mi-Jung
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Abstract
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Purpose: In the present study, the effect of circle contact lenses wear on contrast sensitivity and glare sensitivity in a refractive surgery group was investigated.
Methods: The contrast sensitivity and glare sensitivity were evaluated using by CGT-1000 for a non-refractive surgery group as control group(40 eyes) and a refractive surgery group(30 eyes) applied plano circle contact lenses, and pupil size was also measured. The correlation between contrast/glare sensitivity and the pupil size was analyzed.
Results: In the refractive surgery group, contrast sensitivity in the range of high spatial frequency decreased with wearing circle contact lenses, and amount of decrease for the refractive surgery group was larger than for the control group. The correlation between pupil size and the change of contrast sensitivity was decreased by wearing circle contact lenses, and the correlation was lower in the refractive surgery group than the control group. Furthermore, the wear of circle contact lenses affected on glare sensitivity. In analyzing the change of glare sensitivity by pupil size, the glare was larger in the refractive surgery group than control group. Circle contact lenses in refractive surgery group were not fitted on the center of cornea.
Conclusions: In the present study, it is suggested that the sufficient understanding and consideration about the decrease of contrast sensitivity and the increase of glare by wearing circle contact lenses after the refractive surgery is necessary.
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KEYWORD
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Circle contact lens, Refractive surgery, Contrast sensitivity, Glare sensitivity, Pupil size
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