Visual acuity test device and method of preparing same

Details Visual acuity test device and method of preparing same Visual acuity test device and method of preparing same

A - Human Necessities

61

B

88/121.5

A61B 3/02 (2006.01) A61B 3/032 (2006.01)

Patent

CA 1295504

VISUAL ACUITY TEST DEVICE AND METHOD OF PREPARING SAME Abstract of the Disclosure A visual acuity testing device and method of preparing same are provided, the device being in the form of an optotype as well as a series of optotypes of the same nature, each of which is defined according to a rectangular optotype gridwork including a plurality of rectangular unit areas of contrasting colors or differing contrast properties that are varied in coloration or contrast as desired in order to form a set of optotype characters that exhibit similar peripheral shapes that vary from one another to define readily recognizable optotype characters.

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