Intraocular Lens Design

Invention

Design for accomodating intraocular lens

Development status

• Sketches and patent application
• No prototype nor data

D. Jackson Coleman, MD is the former Chair of Department of Ophthalmology at the Weill Medical College of Cornell University and Ophthalmologist-in-Chief of the New York Presbyterian Hospital. He is an inventor on 13 patents, and his research interests are largely centered on imaging and diagnosing diseases of the eye using ultrasound.

Adrian Glasser, PhD is an Associate Professor in the College of Optometry at the University of Houston, and is the author of several papers on the mechanism of accommodation and how it relates to the development of presbyopia.

Drs. Coleman and Glasser have teamed up to design an intraocular lens that is capable of changing the position of the optical surface in response to ciliary muscle contraction and relaxation, as the natural crystalline lens does during the process of accomodation.

Please see our published US application US2008221676 . These are the only patent rights pending.

Current IOL designs

Coleman/Glasser solution

Single unit must address both capsular bag size and dioptric lens power

Two piece design with separate optic and haptic plate. Haptic plate is toroidal, flexible, and porous or fenestrated

Requires large inventory or less than optimal sizing

Lower inventory cost; Allows for optimal sizing in capsular bag and optimal sizing for dioptric lens power; optic may also be rotated for astigmatism correction; Optimal material can be chosen for each piece (plate haptic and optic)

Winged haptic design may lead to uneven translation of pressure from ciliary muscle/capsule/vitreous; Limited accommodative potential by requirement for translation of optic without change in surface curvature

360 of continuous haptic support and larger contact surface area between haptic/optic and vitreous provide greater stability and improved accommodative performance

Flexibility becomes limited with fibrosis around traditional IOL haptics.

Flexibility and separation of haptic and optic allows improved ease of insertion

The removal or replacement of traditional IOLs is made very difficult by fibrosis of the lens/haptic to the capsular/zonular support structure. (e.g. in pediatric setting or rare cases of mis-measurement)

After insertion, optic may be replaced or rotated with less trauma