- Volume 21 Issue 2
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Comparison of Tear Distributions by the Corneal Eccentricity when Fitted with Spherical and Aspherical RGP Lenses
구면 및 비구면 RGP렌즈 피팅 시 각막 이심률별 눈물분포 비교
- Received : 2016.05.01
- Accepted : 2016.06.09
- Published : 2016.06.30
Purpose: The present study was aimed to compare the tear volume and distribution by corneal eccentricity when fitted with spherical and aspherical RGP lenses. Methods: Spherical and aspherical RGP lenses were fitted in best alignment on a total of 77 subjects (136 eyes) in their twenties and thirties without any ocular disease or ocular surgery experience. The tear volume was analyzed by estimating the concentration of tear stained with fluorescein in the center of RGP lens as well as at the mid-peripheral and peripheral areas, and the difference of tear distributions was analyzed according to corneal eccentricity. Results: Tear distribution from the center to the peripheral area was not significantly different when spherical RGP lenses were fitted on the corneal eccentricities of e < 0.38 and
Corneal eccentricity;Tear volume;Tear distribution;RGP lens fitting;RGP lens design
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