A para-central defocusing measuring optometry apparatus comprising a diopter measurement module. The diopter measurement module comprises a first light source (1) emitting a first light beam. The optometry apparatus also comprises a scanning module for adjusting the position of the facula formed on the retina by the first light beam. The scanning module also comprises a first reflective lens (3) and a second reflective lens (5) rotatably positioned in sequence in the emergent optical path of the first light source (1). The rotation axis of the first reflective lens (3) and the rotation axis of the second reflective lens (5) form therebetween an angle greater than 0 degree and less than 180 degrees.
