Supersonic ophthalmic measuring apparatus
US5056522A · kind A · utility
35Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4209
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A supersonic ophthalmic measuring apparatus includes a supersonic probe for contacting the cornea of an eye to be examined. A calculator for calculating the amount of depression of the cornea of the eye to be examined caused by the supersonic probe, and a corrector for correcting the result of the measurement of the eye axis length of the eye to be examined by the supersonic probe by the amount of depression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.