AIM:To explore the use of rigid gas permeable(RGP)contact lens, and its clinical effect and safety in the treatment of adult high and special type ametropia.

METHODS: Totally 110 cases(185 eyes)of Ophthalmology Center fitting of RGP from January 2010 to December 2012 were retrospective analyzed. According to the refractive error types, patients were divided into high myopia astigmatism group( 49 cases, 92 eyes), 36 cases(64 eyes)of keratoconus group, special ametropia group(25 cases, 29 eyes). Corrected visual acuity differences, adverse reactions of different temporal acuity and conventional frame in the three group were observed after wearing RGP.

RESULTS:After wearred RGP, corrected visual acuity of high myopic astigmatism group was 4.94±0.16, keratoconus group was 4.98±0.15, and special ametropia group was 4.87±0.19; they were significantly better than wearing frame mirror 4.86±0.23, 4.79±0.22, 4.61±0.27 and the differences were statistically significant(P<0.05). After 3 and 6mo of wearing RGP, patients eyesight after RGP was better than that of wearing frame glasses(P<0.05). As the astigmatism group, keratoconus group, special ametropia group wearing RGP, visual acuity after distribution were obviously better than the case when wearing frame glasses(P<0.05).

CONCLUSION: Wearring RGP can correct adult high and special type ametropia than ordinary frame glasses, which avoid the occurence of dry eye, foreign body sensation, and easy fatigue. It is worthy of clinical application.