Abstract

DO.18.07

Computer animated children’s pictures to test visual acuity

Müller D., Kandzia C., Roider J.
Klinik für Ophthalmologie des UKSH, Campus Kiel

Objective: Especially in children, testing visual acuity is a very important element of the ophthalmological examination. The procedure in the following therapy essentially depends on the results of vision testing. Some children achieve false-low results in their visual acuity, because of reduced compliance. We are developing a computer animated vision test to advance children’s motivation and to get more precise results.
Methods: This vision test is a further developed version of the visual acuity chart “Echelle Animaux” that was introduced by M. Ardouin, J. and M. Urvoy. The animals’ pictures in this chart (cock, rabbit, butterfly, duck, elephant and fish) were put into different landscapes by computer animation. The vision test is conducted by using a LCD-monitor in a distance of 5 meters. First we proved the visual acuity of 16 normal adult volunteers by using the standard vision test with E-hooks, the static children’s pictures and the computer animated test to find out if their results are comparable. Furthermore we performed the computer animated and the static test on 16 children who achieved good acuity scores in a conventional vision test. The computer animated test was then performed on 30 children whose visual acuity could not be tested by conventional methods because of reduced compliance or whose acuity scores were doubtfully false-low.
Results: Most of the tested children are more motivated and attentive performing the computer animated test. The measured acuity scores are often evidently higher than in the test before, especially in cases of doubtful results. The results show that we can decrease the problem of reduced compliance and concentration problems. The measured acuity scores are cleaned from mistakes caused by low motivation.

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