ABSTRACTThe purpose of this study was to evaluate the Swedish screening criteria for referral of children to ophthalmic care after visual acuity testing at the age of 4 years. The screening limit has generally been 0.8. To what extent do children with 0.65 in each eye (0.65/0.65) or 0.65 in one and 0.8 in the other (0.65/0.8) at the age of 4 years have visual defects needing early treatment? Sixty‐three children who had failed screening underwent orthoptic and ophthalmologic evaluation. Twenty‐four patients (38) saw 0.65/0.65 or 0.65/0.8 and were studied further. None of them had manifest strabismus. Refractive errors were minor except in 2 patients who had significant hyperopia. Twenty‐two of these 24 patients returned for reevaluation at the age of five years and that time 18 of them saw 0.8 or more without treatment. Our findings suggest that children with visual acuity of no less than 0.65 and no more than one line's difference between the eyes at 4 years of age seldom have visual defects needing trea
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