PHOTODISRUPTIVE LASER TREATEMENT OF CRYSTALLINE LENS

摘要

Apparatus and methods of treating a hard lens region of an eye with a laser where one method includes identifying a boundary of the hard lens region, selecting a laser-parameter to enable a photodisruptive procedure in the hard lens region and to control a spreading of bubbles in the hard lens region, modifying a mechanical property of a posterior portion of the hard lens region in a proximity of the identified boundary by the photodisruptive procedure, and modifying a mechanical property of a portion anterior to the modified posterior portion of the hard lens region by the photodisruptive procedure. The laser bubbles can be applied to form incisions which are non transverse to an axis of the eye and intersect the lens fibers.

主权项

1. A laser system for fragmenting a crystalline lens of an eye, comprising:
a pulsed laser configured to generate a laser beam of laser pulses; and an optical delivery system comprising an X-Y scanner with a first scanning speed and a Z-scanner with a second scanning speed slower than the first scanning speed, wherein the optical delivery system is configured to form an incision in the lens of the eye on a layer-by-layer basis by scanning the laser beam with the XY scanner along a curved focal plane of the optical delivery system to form a line of bubbles in each layer without adjusting the Z scanner at the first scanning speed of the XY scanner.