PURPOSE: To obtain both functions of a keratometer and a lensmeter with a simple construction by introducing a cornea reflected luminous flux which is obtained by projecting a luminous flux to a cornea of an eye to be inspected and to a lens to be inspected and a luminous flux passing through the lens to measure a radius of curvature of the cornea and a refraction value of the lens to be inspected.

CONSTITUTION: A solenoid 36 is driven to insert a stop 35 onto an optical path and when light sources 20a-20d are turned ON, four cornea reflected images are generated on a cornea Ec by these luminous fluxes and after reflected with a mirror 23, the images are reflected on a mirror 30 via a lens 29 to be projected onto an image sensor 19 via a lens 33, a mirror 34 and a stop 35 to measure a radius of curvature of the cornea Ec from a positional relationship thereamong. On the other hands, a lens G to be inspected is set on the side of a light source 16 near a stop 14 and when the light 16 is turned ON, a luminous flux thereof is reflected with a mirror 27 through a lens 15, the lens G to be inspected and the stop 14 and then, with a mirror 34 via a lens 13, a lens 28 and a mirror 25. Thus. four luminous flux images are projected onto the image sensor 19 corresponding to an opening of the stop 14 thereby measuring a refraction value of the lens G to be inspected from a positional relationship among the images.