OPTOMETER AND OPTOMETRY PROGRAM

PROBLEM TO BE SOLVED: To perform proper examination, with both eyes opened.SOLUTION: The optometer for examining subject's eyes, includes: a pair of left/right lens units that are disposed respectively on a first optical path as an optical path of a luminous flux of an optotype projected to the subject's right eye and a second optical path as an optical path of a luminous flux of an optotype projected to the subject's left eye, and that change optical characteristics of the luminous flux of the optotypes in the first optical path and the second optical path respectively by at least automatic cross cylinder lenses; drive means for driving the lens units; and control means for controlling the drive of the drive means. The control means controls the drive of the drive means such that separation directions of the examination optotypes observed via the automatic cross cylinder lenses disposed on the first optical path and the second optical path respectively, become same direction in the first optical path and the second optical path.SELECTED DRAWING: Figure 11 【課題】 両眼解放下で適正な検査を行える。【解決手段】 被検眼を検査する検眼装置であって、被検者の右眼に投影される視標光束の光路である第１光路と、前記被検者の左眼に投影される視標光束の光路である第２光路と、にそれぞれ配置され、少なくともオートクロスシリンダレンズによって前記視標光束の光学特性を第１光路と第２光路でそれぞれ変化させる左右一対のレンズユニットと、前記レンズユニットを駆動させる駆動手段と、前記駆動手段の駆動を制御する制御手段と、を備え、前記制御手段は、前記第１光路と前記第２光路にそれぞれ配置されたオートクロスシリンダレンズを介して観察される検査視標の分離方向が前記第１光路と前記第２光路とで同じ方向となるように、前記駆動手段の駆動を制御することを特徴とする。【選択図】 図１１