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Clinical effects of rigid gas permeable contact lens in correcting high myopia and astigmatism

Ze-Hong Dong;Wei Zhao;Yu-Sheng Wang;Xiao-Ni Yu;Yu-Feng Ren;Jie Feng;Department of Ophthalmology, Xijing Hospital, Institute of Ophthalmology of Chinese PLA, the Fourth Military Medical University;  
AIM:To evaluate the effect of rigid gas permeable contact lens(RGP) in correcting high myopia and astigmatism.METHODS:Forty-one patients(65 eyes) with myopia(-9.03±6.19 DS,maximum-23.00DS) and astigmatism(-1.41 ±1.32 DC,maximum-5.50DC) were fitted with RGP after strict routine ophthalmological examination,objective refraction and subjective refraction.All these patients were followed after 1wk,1,3mo and half one year.RESULTS:Sixty-five eyes were fitted with RGP(-9.92±5.96DS).RGP base curve(BC) was majorly located within the range 7.20~8.25 mm.46.2%eyes with RGP achieved 1.0(BCVA) and 80.1%achieved above 0.6(BCVA).However,with spectacles,the percent was 28%(1.0) and 60%(0.6),respectively.BCVA of RGP was0.81 ± 0.22,but BCVA with spectacles was 0.66 ± 0.28,there was statistical significance(P0.01).There were 40eyes(62%) fitted with RGP whose vision were enhanced more than 1 line,24 eyes(37%) whose vision were not changed and 1 eye(2%) whose vision were dropped 1 line.CONCLUSION:RGP effectively improves visual acuity of high myopia and astigmatism compared with spectacles.
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