Evaluation and analysis of children's graphic visual acuity chart and Teller visual acuity cards on infants

Abstract

Objective To evaluate the feasibility and reliability of visual assessment system of Children's Graphic Visual Acuity Chart and Teller Visual Acuity Cards on infants.Methods A total of 185 patients were included in this study from Strabismus and Amblyopia Out-patient Department,Beijing Tongren Hospital in 2012.Among those,118 eyes were checked in 59 infants from 2 to 3 years old with Children's Graphic Visual Acuity Chart,252 eyes were checked in 126 infants from 5 months to 2 years old with Teller Visual Acuity Cards.They were divided into 10 groups according to their age sequence,and every 2 months for one group.The visual acuity was recorded and results were analyzed statistically.Results Visual acuity was obtained with Children's Graphic Visual Acuity Chart,and the results were as follows:0.1-0.2 accounted for 14.41％ (17 in 118),0.3-0.5,64.40％ (76 in 118),0.6 21.19％ (25 in 118); Similarly,visual acuity with Teller Visual Acuity Cards were obtained,the results were as follows:13cy/cm accounted for 21.43％ (54 in 252),4.8-9.8cy/cm 20.63％ (52 in 252),1.3-3.2cy/cm 42.86％ (108 in 252),0.86cy/cm 10.71％ (27 in 252),0.43cy/cm 4.37％ (11 in 252).Conclusions Children's graphic visual acuity chart and Teller visual acuity cards are feasible and reliable visual assessment system on 5 months to 3 years old children.Compared with conventional test,the two visual assessment systems can find abnormal low vision earlier.At the same time,these visual assessment systems can be developed for early intervention and treatment programs on congenital eye disorders in infants with low vision. Key words: Infant vision assessment; Children's graphic visual acuity chart; Teller visual acuity cards