Apparatus and methods for reversal of presbyopia using near infrared selective laser on zonnulas
US6491688B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 21, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00895
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for presbyopia correction are disclosed. The disclosed preferred embodiments of the system consists of a beam spot controller, a beam delivery device, a slit lamp, a visible aiming beam and a selected solid state laser having a wavelength of (0.9-1.4) microns. Presbyopia is treated by the thermal contraction of the human zonnulas with a temperature increase of about (15-50) degree-C generated by the selected lasers. The near infrared laser is focused and delivered by a gonio lens to the target zonnulas area and viewed by a surgeon using a slip lamp. The selected laser having an optimal absorption characteristics is tightly focused such that only the target zonnulas is heated, while the cornea, the lens body and the adjacent areas are not damaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.