Visual Prognosis in Children with Astigmatic Amblyopia.

Lee, Hyun Chan; Kim, Myung Mi

Original Article

Journal of the Korean Ophthalmological Society 1996;37(5):797-804.
Published online May 1, 1996.

Visual Prognosis in Children with Astigmatic Amblyopia.

Hyun Chan Lee, Myung Mi Kim

Department of Ophthalmology, College of Medicine, Yeungnam University, Taegu, Korea.

난시에 의한 약시 소아의 시력 예후

이현찬(Hyun Chan Lee),김명미(Myung Mi Kim)

Abstract

This retrospective cohort study about astigmatic amblyopia was conducted to investigate the effects of degree and type of astigmatism on initial and final corrected visual acuity, and the effects of age at initial correction and duration of correction on corrected visual acuity. Records of 37 children with astigmatic amblyopia who visited ophthalmologic clinic of Yeungnam University Hospital between November 1985 and October 1994 were reviewed. Follow-up ranged from 8 months to 9 years 3 months(mean 3 years). The distribution of initial corrected visual acuity was 0.1 to 0.5(mean 0.33). Age at initial correction varied from 3 to 7 years(mean 4.4 years). Initial and final corrected visual acuity was neither influenced by type of astigmatism nor degree of astigmatism. Initial corrected visual acuity was increased gradually with age, whereas final corrected visual acuity was not associated with age at initial correction but could be correlated with initial corrected visual acuity and duration of correction. Duration from initial correction to visual improvement of two lines on visual acuity chart was neither associated with age at initial correction nor degree of astigmatism. Duration of correction influenced on the visual outcome, showing continuous visual improvement during 4 years after initial correction.

Key Words: Age at initial correction;Astigmatic amblyopia;Degree of astigmatism;Duration of correction;Type of astigmatism