Photodisruptive laser treatment of the 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 method of treating a crystalline lens of an eye with a laser, the method comprising:
selecting a surgical region of the lens; and forming an incision in the surgical region on a layer-by-layer basis by scanning a laser beam with an XY scanner of a laser delivery optics along a curved focal plane of the laser delivery optics to form a line of bubbles in each layer without adjusting a Z scanner of the laser delivery optics at a scanning rate of the XY scanner, wherein:
an orientation of a portion of the incisions is one of an orientation intersecting fibers of the lens and an orientation non-transverse to an axis of the eye; andthe incision has a spatial extent in a Z direction in the range of 0.5-10 mm, and in an X-Y plane in the range of 2-10 mm.