US 12,419,512 B2
Method for inducing a controlled variation of accommodation in an eye of a subject
Adèle Longo, Charenton-le-pont (FR); Camille Cathala, Charenton-le-pont (FR); Gildas Marin, Paris (FR); and Martha Hernandez-Castaneda, Charenton-le-pont (FR)
Assigned to Essilor International, Charenton-le-Pont (FR)
Appl. No. 17/624,678
Filed by Essilor International, Charenton-le-pont (FR)
PCT Filed Jul. 2, 2020, PCT No. PCT/EP2020/068684
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/004891, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 19315061 (EP), filed on Jul. 5, 2019.
Prior Publication US 2022/0257109 A1, Aug. 18, 2022
Int. Cl. A61B 3/10 (2006.01); A61B 3/00 (2006.01); A61B 3/02 (2006.01); A61B 3/032 (2006.01); A61B 3/103 (2006.01); A61B 3/12 (2006.01); A61B 3/14 (2006.01); G02B 27/10 (2006.01)
CPC A61B 3/0041 (2013.01) [A61B 3/0008 (2013.01); A61B 3/0091 (2013.01); A61B 3/032 (2013.01); A61B 3/103 (2013.01); A61B 3/145 (2013.01); G02B 27/10 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for inducing a controlled variation of accommodation in an eye of a subject, using an optical system arranged in front of at least one eye of the subject including a global display with an acuity module and a scene module and an optical system configured to transmit a light beam produced by an acuity screen of the acuity module and a light beam produced by a scene screen of the scene module along a same direction, combining an image produced by the acuity screen with another image generated by the scene screen, and comprising:
a) displaying an environmental scene on the scene screen;
b) displaying a target on said acuity screen, such that the eye of the subject views an image resulting from the combination of the target and the environmental scene displayed in step a), said target being visible by the subject through said optical system, said target being displayed in such a way that it is perceived by the subject as moving away from said subject or moving towards said subject within said environmental scene; and
c) instructing the subject to observe said target displayed in step b),
wherein, in steps a) and b), at least one of the environmental scene and the target is displayed using a stereoscopic device displaying two overlaid images of said at least one of the environmental scene and target, each image being seen by one of the eyes of the subject, said stereoscopic device introducing a spatial shift between the two images forming together a stereoscopic three-dimensional representation, and
wherein, while said at least one of the environmental scene and target is displayed, said spatial shift between the two images of the stereoscopic three-dimensional representation seen by the eyes of the subject is progressively reduced or increased.