Patent ID: 8366274

Claim:
A subjective refraction method for generating a prescription for one or more corrective lenses for a patient, comprising: (a) disposing a patient's eye in a substantially fixed position; (b) displaying at least one item in a quality vision marker (QVM), and adjusting at least one of the display items relative to a linear image or a point image, or both, until an indication is provided by the patient; (c) forming a blurry image of the point light source at the patient's eye through an optical assembly, the image comprising a refractive error of sphere, astigmatism or higher order aberrations (HOA), or combinations thereof, of the patient's eye; (d) adjusting one or more optics of the optical assembly that are continuously disposed along an optical path between the point light source and the patient's eye, (e) searching until the patient indicates at least one of the following end points while looking at the item at the point light source: i) converging the blurry image to become a more linear image; ii) measuring the orientation of the linear image; iii) converging the linear image by reducing its long dimension; and iv) focusing the image substantially into a point-like image; and (f) determining a prescription for a corrective lens for the patient's eye based on known parameters of the optical assembly and on at least one adjusted position or orientation, or both, of the one or more optics of the optical assembly.