Fitted next to the center device can measure the defocus

The present invention provides apparatus for measuring refraction beside the center of defocus. It includes a power measurement module, the refractive power measurement module comprises a first light beam exiting the first, the optometry apparatus further comprises a scanning module for adjusting a first light beam spot formed on the retina of the position of the scanning module comprises successively and rotatably disposed in the optical path of the first light emitted in a first mirror and a second mirror, the first mirror and the second rotation axis of the rotation axis of the mirror an angle formed between greater than 0 and less than 180 degrees.