Patent · US Active

Method and device for determining a refraction feature of an eye of a subject

US12096984B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Essilor International · FR

Inventors

Guilhem Escalier · Charenton-le-Pont, FR
Konogan Baranton · Charenton-le-Pont, FR

Key dates

Filing date	Dec 19, 2019
Grant date	Sep 24, 2024
Priority date	—
Expiry date	Sep 25, 2041

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/14
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Disclosed is a method including the steps of: a) illuminating a pupil of the eye of a subject by a light source; b) acquiring at least one picture of the pupil including an image of the reflection of the light source on the retina of the eye, by means of an image-capture apparatus; and c) and determining a refraction feature of the eye from at least a geometrical feature, a positional feature, or an intensity distribution of the image of the reflection of the light source. Optical distances between the pupil and, respectively, the light source and the image-capture apparatus, are different. An associated device is also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.