Ophthalmic apparatus
US6588902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Oct 10, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00872
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmic apparatus provided with an ophthalmic unit for examination, measurement, or treatment, the unit having a center axis which is aligned with respect to an examinee's eye, is disclosed. This apparatus includes an observation unit through which an image of an anterior part of the examinee's eye is observed; a position detection unit which projects light to the examinee's eye and detects reflection light from the examinee's eye to obtain a position of a center of a cornea or a pupil of the examinee's eye; and a display which displays a graphic mark showing the corneal center or the pupil center with an aiming mark based on a detection result by the position detection means, the marks being superimposed on the anterior part image formed by the observation means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.