Gerald Horn

New refractive method for laser thermal keratoplasty with the Co:MgF2 laser

ABSTRACT We have observed corneal curvature changes from laser thermal keratoplasty with a Co:MgF2 laser. We studied corneal curvature changes in rabbits and have identified specific treatment patterns and laser parameters that can correct myopia and astigmatism. These corneal changes, some as large as 8 diopters, have been stable for at least one year, and slitlamp examination demonstrates clear central corneas with normal appearance.

Corneal refractive correction by laser thermal keratoplasty

We report corneal curvature modifications for rabbit corneas which we achieved by controlled heating of the cornea with a continuous Co:MgF2 laser in the 2 micron region. Our experiments were designed to flatten the cornea, which is required for myopic correction. Large changes of 6-8 diopters in corneal curvature have been stable for the one year duration of the experiments. This is a new method for correcting corneal curvature which retains normal corneal function while not requiring invasive techniques such as cutting or ablation.

An insertion technique for the double-closed-loop posterior chamber lens

We have developed a technique for inserting double-closed-loop posterior chamber implants that minimizes zonular stress with both ciliary sulcus and capsular bag insertion and facilitates in-the-bag placement if desired.

An intraocular lens carrier

An intraocular lens carrier for anterior and posterior chamber lenses has been developed. The device consists of a protective polypropylene envelope with an insertion leaf, which allows anterior chamber lenses to be inserted without iris or corneal touch and posterior chamber lenses to be guided into the ciliary sulcus or capsular bag with minimal or no haptic manipulation. +