Eye disease inspecting instrument
US4711540A · kind A · utility
35Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1985 |
| Grant date | Dec 8, 1987 |
| Priority date | — |
| Expiry date | Jan 3, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/135
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An eye disease inspection instrument comprising a slit light projection optical system for projecting a slit light along a projecting optical axis to a patient's eye, a first optical system for observing a crystalline lens of the patient's eye at a section which is being illuminated by the slit light, a second optical system including an objective lens having an objective optical axis substantially coaxial with respect to the projecting optical axis for performing an observation under a retroillumination method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.