Patent ID: 11903644
Assignee: SCHEPENS EYE RESEARCH INSTITUTE, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC A  G | IPC A  G

Claim 6:
7. A method of vision prescription measurement, the method comprising:
automatically measuring, by an image acquisition unit installed in a mobile device, a distance between a patient and the mobile device;
presenting, on a display of the mobile device, one or more visual targets sized and shaped to represent perfect vision, the visual targets including grating targets, a processor installed in the mobile device determining accurate sizes and shapes based on the measured distance;
instructing the patient to indicate whether the patient can accurately read the visual targets and, if not, to move closer to the mobile device until the patient can accurately read the visual targets;
automatically measuring, by the image acquisition unit installed in a mobile device, the distance between the patient and the mobile device again at a final distance at which distance the patient can accurately read the visual targets;
calculating, by the processor, a vision prescription for the patient based on the visual targets and the final distance between the patient and the mobile device; and
displaying, by the display, the vision prescription for the patient.