US 12,232,811 B2
Computer-implemented method and system for interactively measuring ocular refractive errors, addition and power of reading glasses
Norberto Lopez Gil, Aguilas (ES); Arthur Bradley, Aguilas (ES); and Mateusz Tomasz Jaskulski, Aguilas (ES)
Assigned to VISIONAPP SOLUTIONS S.L., Aguilas (ES)
Appl. No. 17/598,391
Filed by VISIONAPP SOLUTIONS S.L., Aguilas (ES)
PCT Filed Apr. 21, 2020, PCT No. PCT/EP2020/061054
§ 371(c)(1), (2) Date Sep. 27, 2021,
PCT Pub. No. WO2020/216732, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 19382316 (EP), filed on Apr. 25, 2019.
Prior Publication US 2022/0151488 A1, May 19, 2022
Int. Cl. A61B 3/103 (2006.01); A61B 3/00 (2006.01); G06V 40/16 (2022.01)
CPC A61B 3/1035 (2013.01) [A61B 3/0033 (2013.01); G06V 40/178 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A computer-implemented method for interactively measuring ocular refractive errors, addition and power of reading glasses of a user of an electronic device comprising:
displaying a target on an electronic screen of the electronic device,
receiving a first input from the user and changing spatial characteristics of the target according to said user input,
receiving a second input from the user indicating that the electronic screen of the electronic device is positioned at one of the borders of the interval of clear vision (BICV) where a visual quality of the target satisfies a certain visual quality criterion, wherein the certain visual quality criterion is a contrast sensitivity criterion, a color discrimination criterion, subjective clarity, or a combination thereof;
measuring at least a distance between the user's head or part of the user's head and the electronic screen using the second input;
computing at least one parameter of refraction selected from a first group consisting of: cylinder (CYL) axis (AXS) and power of the reading glasses (P), at least from said measured distance; or selected from a second group consisting of: a sphere (SPH) and addition (ADD), from at least said measured distance and from user's age (AGE).