Orthokeratology 콘택트렌즈에 의한 나안시력의 개선효과

Orthokeratology is defined as the temporary reduction in myopia and/or astigmatism by the mechanical pressures on comea using the rigid gas permeable contact lenses. The purpose of this study is to assess visual and refractive changes in subjects undergoing ovemight orthokeratology. Twenty-one myopic subjects(mean age, 11.3::!::2.1 years) were recruited for 1 month 띠al of overnight orthokeratology using reverse geometry rigid gas permeable contact lenses. After commencing lens wear, subjects were examined unaided visual acuity, subjective refraction and slit lamp exarninations on days 1, 3, 7, 14, 21 and 30. The mean uncorrected visual acuity and subjective refraction were significantly changed from baseline at day 30(mean change in uncorrected visual acuity of 0.66 ::!:: 0.24, mean change in subjective refraction of 2.30::!:: 1.18 Ð). These results suggest that ovemight orthokeratology is an effective means of temporarily reducing myopia and controlling myopia progression.