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목적 : To assess the effect of rigid gas-permeable (RGP) contact lenses on the visual rehabilitation of post-penetrating keratoplasty (PK) eyes.
방법 : Twelve eyes out of 12 patients who underwent PK were enrolled. RGP lens fitting was performed after refractive errors were stabilized. The initial trial lens was selected based on the keratometric values of topography, and the final lens was prescribed based on manual fitting findings including lens centration, movement, and fluorescein pattern. Topographical measurements of corneal astigmatism, 3- and 5-mm zone irregular astigmatism were analyzed. The best-corrected visual acuity (BCVA) with RGP contact lenses was compared with that of spectacle correction.
결과 : The average interval between PK and RGP trial was 50.4 ± 21.6 months. The mean topographic corneal astigmatism was 5.04 ± 3.83 and the 3- and 5-mm zone irregular astigmatism was 5.99 ± 2.32 and 8.54 ± 3.09, respectively. The average uncorrected visual acuity (LogMAR) was 1.44 ± 0.32. The mean BCVA (LogMAR) was 1.03 ± 0.41 with spectacles and 0.42 ± 0.27 with RGP contact lenses. The BCVA with RGP contact lenses was significantly better than that of spectacle correction (P=0<0.001, via Wilcoxon signed-rank test).
결론 : RGP contact lenses can be a useful refractive treatment alternative in suture remained post-PK eyes with high degrees of irregular astigmatism.
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