SUBJECTIVE EYE REFRACTOMETER AND REFRACTOMETRY METHOD

摘要

A subjective eye refractometer includes an imaging lens and a target, the front surface of the cornea of a testee is located at a focal point of the imaging lens, the target and an eye of the testee are respectively located on two sides of the imaging lens along an optical axis of the imaging lens, and the target can move forward and backward along the optical axis by means of setting, and the subjective eye refractometer is marked with a value D₁ for identifying a spherical refractive-power along a movement path of the target, a movement position x is obtained by subtracting a focal distance f₀ from an object distance of the target, when the testee sees the target clearly, the spherical refractive-power of glasses to be worn on the eyes is the corresponding spherical refractive-power D₁ at the movement position x of the target. The invention further discloses a subjective refractometry method.