Iol peripheral surface designs to reduce negative dysphotopsia

Details Iol peripheral surface designs to reduce negative dysphotopsia Iol peripheral surface designs to reduce negative dysphotopsia

A - Human Necessities

61

F

A61F 2/16 (2006.01)

Patent

CA 2685367

An IOL (10) is disclosed that includes an anterior surface (14) and a posterior surface (16) disposed about an optical axis (OA), where the posterior surface includes a central region extending to a peripheral region (22). Once the IOL is implanted in a patient's eye, the anterior surface and the central region of the posterior surface cooperatively form an image of a field of view on the retina and the peripheral region of the posterior surfac directs at least some light rays (24a, 24b) incident thereon (e.g., via refraction by the anterior surface) to at least one retinal location offset from the image so as to inhibit dysphotopsia.

L'invention concerne une LIO, qui présente une surface antérieure et surface postérieure disposées autour d'un axe optique, la surface postérieure comprenant une région centrale qui s'étend vers une région périphérique. Une fois la LIO implantée dans l'AEil d'un patient, la surface antérieure et la région centrale de la surface postérieure forment ensemble sur la rétine une image d'un champ de vision, et la région périphérique de la surface postérieure dirige au moins quelques rayons de lumière incidents reçus (p. ex. par réfraction par la surface antérieure) vers au moins un emplacement de la rétine décalé de l'image, de façon à inhiber la dysphotopsie.

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