Derrick J Johnson

US Patent:

20080262610, Oct 23, 2008

Filed:

Apr 20, 2007

Appl. No.:

11/738349

Inventors:

Alan Lang - Long Beach CA, US
Troy Miller - Rancho Santa Margarita CA, US
Ned Schneider - Aliso Viejo CA, US
Alexander Vatz - Lake Forest CA, US
Tonya Brooke Icenogle - Newport Beach CA, US
Sylvia Franz - Laguna Beach CA, US
Derrick Johnson - Orange CA, US

International Classification:

A61F 2/14

US Classification:

623 516

Abstract:

Provided herein are intracorneal inlays for correcting vision impairments by altering the shape of the anterior corneal surface. The physical design of the inlay to induce the desired change of the anterior corneal surface includes consideration of the biomechanical response of the corneal tissue to the physical shape of the inlay. This biomechanical response can differ depending on the thickness, diameter, and profile of the inlay. In one embodiment, inlays having diameters smaller than the pupil are provided for correcting presbyopia. To provide near vision, an inlay is implanted centrally in the cornea to induce an “effect” zone on the anterior corneal surface, within which diopter power is increased. Distance vision is provided by a region of the cornea peripheral to the “effect” zone. In another embodiment, small diameter inlays are provided that induce “effect” zones on the anterior corneal surface that are much larger in diameter than the inlays.