Patent ID: 7607778

Claim:
An optotype presenting apparatus comprising: a display unit comprising pixels arranged in longitudinal and lateral directions, in which R, G and B color filters are arranged in order in the longitudinal direction; a polarization optical member placed in front of the display unit, which comprises first and second optical regions in the form of a longitudinal line corresponding to the arrangement of the pixels of the display unit in the longitudinal direction, which are alternately arranged in the lateral direction, the first and second optical regions arranged to convert light from the display unit into light having polarizing axes perpendicular to each other; an optotype selecting unit comprising optotype selecting switches including a switch for selecting a binocular optotype for a binocular vision test; and a display control unit which controls the pixels corresponding to the first optical regions to display first optotypes of the binocular optotype which are to be presented to either one of right and left eyes of an examinee, and controls the pixels corresponding to the second optical regions to display second optotypes of the binocular optotype which are to be presented to the other eye.