Phaco-Ersatz: cataract surgery designed to preserve accommodation

Area of Science:

• Ophthalmology
• Biomaterials Science
• Surgical Innovation

Background:

• Cataract surgery involves removing the clouded natural lens.
• Aphakia, the absence of the natural lens, requires correction.
• Current intraocular lens implants aim to restore vision but have limitations.

Purpose of the Study:

• To introduce and evaluate the feasibility of the Phaco-Ersatz technique.
• To explore a new method for correcting aphakia by recreating a functional lens.
• To lay the groundwork for future research into the accommodative potential of the ersatz lens.

Main Methods:

• Phaco-Ersatz procedure: cataract removal while preserving the lens capsule.
• Refilling the empty lens capsule with a biocompatible, optically clear gel.
• Surgical feasibility demonstrated in human cadaver eyes and in vivo animal models (rabbits, cats).

Main Results:

• The Phaco-Ersatz surgical technique was demonstrated to be feasible.
• The procedure successfully recreates a physiologic lens within the preserved natural lens capsule.
• Experimental models confirmed the viability of the surgical approach.

Conclusions:

• Phaco-Ersatz offers a promising new surgical approach for cataract and aphakia correction.
• The technique involves in situ reconstruction of a lens using a gel implant.
• Further research is warranted to investigate the accommodative capabilities of this recreated lens.