[Objective vision test in very young children (author's transl)].

By means of the Catford Visual Acuity Apparatus it is possible to determine objectively the visual acuity even in very young children easily and in a very short time; in children aged less than one year in most cases only a binocular later on a monocular acuity could be ascertained. There are almost no difficulties caused by the language. The visual results of 100 patients are given, 63 of which were under 3 years old; 10 children were aged between 5 and 24 months. A control group of 30 patients was also tested with Pflüger optotypes, and the results were compared; half of them were as good as, half of them -- mostly slightly -- better than the results gained by the Pflüger-test. We can therefore recommend the use of the Catford Apparatus in very young children and in such cases where the visual acuit can be determined only under very difficult conditions. The results are exact and can be assumed to be the same as with Pflüger's optotypes. Moreover, the Catford's apparatus may be also used for the testing of aggravants.