We assessed binocular grating visual acuity with the Teller acuity cards (TAC) in 3-36-month-olds at risk for visual disorders. After 3-8 years, each child was assessed with the TAC and with a battery of tests of spatial and non-spatial vision. The initial TAC score: (1) was uncorrelated with any of the later measures; (2) had low positive, but high negative predictive value for the later tests; (3) had low sensitivity, but high specificity for identifying children with and without visual disorders, respectively. We concluded that early TAC grating acuity predicts visual outcome, but perhaps only for children with initially normal grating acuity.
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