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Long-term effect and safety of YK-KC lens® on keratoconus

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Session Details

Session Title: Special Cases I

Session Date/Time: Sunday 06/09/2015 | 14:30-16:00

Paper Time: 14:58

Venue: Room 10

First Author: : J.Lee SOUTH KOREA

Co Author(s): :    Y. Park   J. Lee   H. Choi   S. Lee           

Abstract Details


To evaluate the long term clinical effect and safety of YK-KC lens® (LucidKorea Ltd., Seoul, Korea) on keratoconus.


Pusan national university hospital, Pusan national university Yangsan hospital, Jungkeun eye hospital, Lee and Park's eye clinic, YK eye clinic


This study investigated 152 keratoconic eyes who had been fitted with a YK-KC lens® and had follow up of at least 5 years. We assessed retrospectively self-reported patient comfort, best corrected visual acuity, corneal topographic indices before and after contact lens fitting, and complications during contact lens wearing.


There were 57 male and 40 female patients with the mean age of 28.6±8.5 years. The mean follow up was 8.0±2.9 years. Self-reported comfort was achieved in 126 eyes(82.9%). The mean best corrected visual acuity (logMAR) was improved from 0.49±0.42 to 0.19±0.27 which was statistically significant (p<0.001). After contact lens fitting both SimK max and SimK min tended to be steeper, but these differences were not statistically significant (p=0.66 and 0.11). Complications noted included punctuate or coalesced epithelial corneal staining in 24 eyes (16%) but there was no persistent full-thickness epithelial defect.


The YK-KC lens® in patients with keratoconus could provide excellent visual improvement and comfort without any significant influence on the progression of keratoconus and complications on cornea during the long-term follow-up period.

Financial Interest:


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