Instrument for simulating multifocal ophthalmic corrections
US8876289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2011 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | May 26, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/0285
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an instrument for simulation of multifocal ophthalmic corrections, comprising two optical channels with different optical power values in the beams coming from the object observed, wherein at least one channel comprises a Badal system. This instrument simultaneously provides images of objects near and far focused. The system provides the same optical magnifications for each channel, regardless of the optical power thereof, and produces superimposed retinal images with different degrees of focus which, unlike other devices, are all of the same size. The instrument allows simulating different optical powers for near vision and different refractive corrections for distant vision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.