| Long-Term Effect and Safety of Contact Lenses for Keratoconus. |
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Jong Heon Lee, Young Min Park, Young Kee Park, Jong Su Lee, Ji Eun Lee |
1Department of Ophthalmology, Pusan National University School of Medicine, Busan, Korea. Jiel75@hanmail.net
2YK Eye Clinic, Seoul, Korea.
3Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea. |
| 원추각막 콘택트렌즈의 장기적 효과 및 안전성 |
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이종헌1⋅박영민1⋅박영기2⋅이종수1⋅이지은1,3 |
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부산대학교 의학전문대학원 안과학교실1, YK 안과의원2, 부산대학교 의학전문대학원 양산부산대학교병원 의생명융합연구소3 |
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Received: 19 December 2014 • Revised: 30 January 2015 • Accepted: 4 June 2015 |
| Abstract |
PURPOSE
To evaluate the long-term clinical effect and safety of YK-KC lens(R) (LucidKorea Ltd., Seoul, Korea) for keratoconus. METHODS: In this study we investigated 152 keratoconic eyes fitted with YK-KC lens(R) and followed up for 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. RESULTS: The study included 57 male and 40 female patients with a mean age of 28.6 +/- 8.5 years. The mean follow-up was 8.0 +/- 2.9 years. Regarding lens comfort, 126 eyes (82.9%) showed self-reported comfort for YK-KC lenses(R). The mean best corrected visual acuity (log MAR) improved from 0.49 +/- 0.42 before lens fitting to 0.19 +/- 0.27 after lens wearing, which was statistically significant (p < 0.001). Based on the keratometric values, after contact lens fitting both Simulated keratometry (Sim K) max and Sim K min tended to be steeper, but these differences were not statistically significant (p = 0.66 and 0.11, respectively). There were no statistically significant differences between the values before and after fitting with respect to the astigmatic powers (p = 0.22). Complications observed included punctate or coalesced epithelial corneal staining in 24 eyes (16%), however, persistent full-thickness epithelial defect was not observed. CONCLUSIONS: The YK-KC lens(R) in patients with keratoconus can provide excellent visual improvement and comfort without any significant influence on the progression of keratoconus or corneal complications during a long-term follow-up period. |
| Key Words:
Contact lens;Keratoconus;YK-KC lens(R) |
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