Device and method for determining at least one objective eye refraction parameter of a subject depending on a plurality of gaze directions
US9521951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Feb 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Device and method for determining an objective eye refraction parameter of a subject depending on a plurality of gaze directions, the device includes elements for ophthalmologically measuring an objective eye refraction parameter of a subject, and elements of visual stimulation of variable proximity and intended to stimulate the visual accommodation of the subject for first and second proximity values. The device includes opto-mechanical alignment elements for carrying out a first optical alignment of the optical axis of measurement on an eye axis in a first measuring position corresponding to a first angle of lowered viewing associated with a first proximity value to take a first measurement of an objective eye refraction parameter of the subject, and a second alignment of the optical axis of measurement on the eye axis in another measuring position corresponding to another angle of lowered viewing associated with another proximity value to take a second measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.