Patent ID: 7802886

Claim:
An ophthalmic apparatus comprising: a target presenting optical system for presenting a target to an examinee's eye through a lens; a correction optical system placed in an optical path of the target presenting optical system, for correcting a refractive error of the eye seeing the target; a diaphragm switching unit arranged to switch an aperture size of a diaphragm, which is placed in a position substantially conjugate with a pupil of the eye with respect to the lens, between a first size corresponding to a pupil size of the eye in photopic vision and a second size larger than the pupil size of the eye in scotopic vision; a switching signal inputting unit arranged to generate a switching signal for switching the aperture size of the diaphragm between the first size and the second size; and a diaphragm control unit arranged to control driving of the diaphragm switching unit based on the switching signal from the switching signal inputting unit to switch the aperture size of the diaphragm between the first size and the second size.