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KMID : 1036620170050041021
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Journal of Korean Clinical Health Science
2017 Volume.5 No. 4 p.1021 ~ p.1025
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Effect of Hydrogel lens and Silicone-Hydrogel lens on Corneal thickness
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Seo Jung-Ick
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Abstract
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Purpose: Changes in corneal thickness after wearing hydrogel lens and silicone-hydrogel lens with different oxygen transmission rates wew syudied.
Methods: Experiments were performed on 11 subjects(22 eyes). corneal thickness was measured after wearing contact lenses for 8 hours. Corneal thickness was measured using ORB Scan Ⅱ(ver.3.14)
Results: In the results of the corneal thickness measurement by direction, in the case of the hydrogel-tor lens, the center thickness was 33.63㎛, the nasal was 34.29㎛, the temporal was 27.17㎛, the inferior was 27.17㎛, the superior was 18.90㎛, and change rates were 6.28%, 5.71%, 5.40%, 4.75% and 3.09%, respectively. In the results of the corneal thickness measurement by diameter, in the case of the hydrogel-tor lens, the center was 33.63㎛, the mid-peripheral was 28.19㎛, the peripheral was 24.18㎛, and change rates were 6.28%, 4.76%, and 3.79%, respectively.
Conclusions: The hydrogel lenses with relatively low oxygen transmission rates resulted in a significant increase in thickness over the entire cornea compared to silicon-hydrogel lenses with high oxygen transmission rates.
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KEYWORD
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corneal thickness, hydrogel lens, silicone-hydrogel lens
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