Opthalmic characteristic measuring apparatus
US6685320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jul 13, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/107
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A first signal and a second signal are captured at the same time, and the optical characteristics of a subject eye and the corneal shape thereof are measured simultaneously or substantially simultaneously. A calculation section captures a received light signal (first signal) from a first light receiving section and a received light signal (second signal) from a second light receiving section at the same timing or substantially the same timing, obtains the optical characteristics of the subject eye on the basis of the first signal, and obtains the corneal shape of the subject eye on the basis of the second signal. A measurement timing decision section decides, on the basis of the first and/or the second signal, measurement timings of the first signal and the second signal as objects for which a measurement calculation is carried out. The measurement timing decision section uses, as a predetermined decision factor for measuring timing, at least one of a blink, a poor tear film, a lack of a pupil diameter, and a poor eyelid. A display section displays, as an image, the first signal and/or the second signal. The operator judges, on the basis of the displayed first signal and/or second …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.