The Small – House Test (H-test) which is easy to understand for the youngest children, was constructed as an alternative to the Bagolini test. The H-test is based on a pictogram of a night view of a small house. In its two windows, a polarized foil with crossed orientation is located. The picture is illuminated from behind. The viewer with polarized glasses, which are regularly used in stereo tests, perceives with his right eye the light coming trough the right window, and with his left eye sees the light in the left window. The H-test, the Bagolini test and the Kubik test were performed in a group of 238 children; the mean age was 3.4 years. The mean age of children, who were able to perform the H-test, was statistically significant lower as the age of children who were able to perform the Bagolini test. The youngest child who performed successfully the H-test was two years old. In the group of 4.5 years old children, only 50 % of them understood the Bagolini test. In the study, the determined parameters of the H-test are discussed (specificity 94.7 %, sensitivity 55.0 %).

        Key words: Bagolini test, binocular vision, specificity, sensitivity