PROBLEM TO BE SOLVED: To reduce the influence of disturbance light in the outside of a casing.SOLUTION: An optometer includes: a casing 5 storing a concave mirror 50 therein, the mirror being disposed on a reference axis L1 set to see a target in which an eye E to be examined is presented in the front direction a display 45 for displaying a target, the display being disposed in the outside of the reference axis L1 outside the casing 5 and a transparent panel 52 disposed in the front of the casing 5 on the reference axis L1, the panel transmitting a target light flux from the display 45, and transmitting the target light flux reflected by the concave mirror 50 again to emit the transmitted light flux to the outside of the casing 5. The normal direction of the front of the transparent panel 52 is disposed at an inclined angle to the reference axis L1, and the angle is set so that the reflected light reflected by the front of the transparent panel 52, which is the reflected light of light emitted from the display 45, travels toward such a direction as to be deviated from the eye E to be examined disposed at a predetermined position.
