Posters

Accommodating intraocular lens implant using a novel applanating variable focus lens system

Poster Details

First Author: S.McCafferty USA

Co Author(s):                        

Abstract Details

Purpose:

Examine the design requirements and potential efficacy of an applanating variable focus intraocular lens (IOL) to aid patients with presbyopia and retinal disease.

Setting:

Laboratory study, proof of concept.

Methods:

Design criteria, solution methods, and preliminary prototype testing are presented for an intraocular lens placed after cataract surgery which allows greater changes in focal distances and magnification than physiologically possible with the patient’s natural lens. The lens would utilize the patient’s natural autonomic feed-back for optimizing focus while maximizing visual clarity.

Results:

A variable focus intraocular lens design is presented with preliminary prototype testing which incorporates all delineated criteria for a surgically workable IOL. The lens is able to accommodate up to 12 diopters with less than 1 gram of physiologically available actuation force. The patient actuated variable accommodation provides up to a 4X linear magnification on the retina over a 3 diopter reading lens.

Conclusions:

A continuously accommodating IOL restoring the eye’s accommodative amplitude has been considered a primary goal in IOL design. Furthermore, magnification has long been used to help macular degeneration patients use their existing retina to maximize visual potential. The design and lens testing presented indicate a feasible solution for restoring or even augmenting a patient’s accommodative ability. The augmented accommodative amplitude would allow patient actuated image magnification at near focus without the need for external devices.

Financial Disclosure:

has significant investment interest in a company producing, developing or supplying product or procedure presented