Ophthalmic aberrometer for measuring aberrations in the eye
US7419264B1 · kind B1 · utility
7Cited by
1References
12Claims
0Family size
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Key dates
| Filing date | Nov 4, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Nov 21, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A ophthalmic aberrometer uses a wavefront sensor aligned with an eye under examination through an optical path and a light source for introducing a light beam into the eye via the optical path, wherein the optical path has a reference through which the light beam passes before passing to an eye retina to form a reference spot on the retina, a focus dynamic range extender, and an astigmatism dynamic range extender positioned in the optical path between the reference and an eye under examination. The wavefront sensor is positioned to receive a wavefront reflected from the eye retina via the optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.