Apparatus for ophthalmic operation using photocoagulation by a laser beam
US5226903A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1992 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/0035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for performing an ophthalmic operation on an eye by photocoagulation using a laser beam while allowing continuous observation of the eye to be treated, includes a light source for producing the laser beam, an observing system having a first inherent optical path including a slit-lamp microscope, a laser optical system having a second inherent optical path, means for transmitting the laser beam from the light source to the laser optical system, means for introducing the laser beam from the second optical path of the laser optical system to the first optical path of the observing system, a contact lens having predetermined characteristics positioned in front of and contacting the eye to be treated, first optical means provided in the first inherent optical path of the observing system for adjusting an objective plane observable from the slit-lamp microscope, means for shifting the objective plane to a desired position along the optical path while observing the objective plane, and second optical means provided in the second inherent optical path of the laser optical system for adjusting a focal point, the laser beam being controlled while adjusting the focal point along …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.