The invention relates to an optical measuring device (1) for capturing at least one parameter of at least one eye (10I 10r) of a test person (31) wearing the optical measuring device (1) comprising a frame (4) which is configured to fix the optical measuring device (1) to the head of the test person (31) at least one capturing unit (3I 3r) which is configured to optically capture the at least one parameter of the at least one eye (10I 10r) and an illumination unit (9 21 22) for illuminating the at least one eye (10I 10r) wherein an illumination characteristic is adjustable by means of the illumination unit (9 21 22).
