Apparatus for operation on a cornea using laser-beam
US5637109A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1994 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Mar 29, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00872
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for ablating the surface of the cornea using a laser beam to correct the refractive of an eye to be operated having a laser source for emitting a laser beam having a non-uniform intensity distribution of Gaussian distribution and the like to one direction and a uniform beam intensity in another direction, an ablation optical system for ablating the surface of the cornea by the laser beam emitted from the laser source, translational scanning device for scanning the laser beam in the direction of non-uniform intensity distribution, beam rotating device for rotating the laser beam emitted from the laser source round the optical axis in the ablation optical system, control device which controls the beam rotation by the beam rotating device whenever the laser beam is scanned in parallel by the scanning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.