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KMID : 1191420140130020053
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Korean Journal of Optometry and Vision Science
2014 Volume.13 No. 2 p.53 ~ p.58
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Comparison of Corneal Thickness According to Oxygen Transmissibility of Contact Lenses Measured by Anterior Segment Optical Coherence Tomography
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Song Mi-Ryoung
Chae Min-Byung
Hwang Je-Hyung
Kim Tai-Jin
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Abstract
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Purpose: With anterior segment optical coherence tomography(OCT), changes of central corneal thickness should be compared by contact lens’ oxygen transmissibility when wearing different soft contact lens under the corneal hypoxic and closed-eye condition.
Methods: Control group is eyes which don’t wear lens for 30 healthy adults. They wore lens with low oxygen transmissibility (Lens A) and lens with high oxygen transmissibility (Lens B). Central corneal thickness was measured by anterior segment OCT every 30 minutes maintained closed-eye during 120 minutes.
Results: There was no significant change among the three groups for the changes of epithelial thickness. But, in the changes of stromal thickness, Lens A group was increased in comparison with other two groups and showed statistically significant increase of about 1% every 30 minutes (p < 0.05). In changes of the whole corneal thickness, Lens A group showed significant increase in comparison with other two groups and there was no significant difference between Lens B group and control group. In the final changing rate of the central corneal thickness, Lens A group was 5.07 ± 3.06% and Lens B group was 2.68 ± 1.67%. Lens A group showed more significant increased than Lens B group.
Conclusions: Under the hypoxic condition, when wearing lens with low oxygen transmissibility for 120 minutes, central corneal thickness showed significant increase. And, usages of anterior segment OCT should be gradually increased for several diseases of various purposes because it can grasp with the whole anterior video under the condition wearing lens.
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KEYWORD
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Anterior segment optical coherence tomography, Central corneal thickness, Oxygen transmissibility, Soft contactlens
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