Assessment of visual acuity in preschool children

Abstract.— Problems in testing visual acuity of preschool children were discussed with regard to choice of optotype and test distance, illumination, instruction and response indicator, and the motivational aspect of the test situation. A test situation conforming to these requirements for measuring visual acuity was arranged for testing of preschool children, using a discrimination learning paradigm with simultaneous presentation of the cues. The test figures were two Landolt Cs of equal size but one with the gap filled in, thus forming a circle. Small toys were used as rewards for choosing the Landolt C. Of 27 children, 2–6 years of age, 25 achieved a visual acuity level corresponding to a Snellen value of 20/20. The results thus indicate a better visual acuity for preschool children than is commonly believed.