Inventors:
Spencer Thornton - Nashville TN, US
James Hays - Atlanta GA, US
International Classification:
A61F 2/14, A61F 9/013
Abstract:
As humans age, there is a general loss of accommodation, termed presbyopia, which eventually leaves the eye unable to focus on near objects. This loss in ability to focus on near objects is a consequence of continued growth of the lens and crowding of the lens, zonules and ciliary body within the posterior chamber. Expansion of the posterior chamber is achieved by placing radial incisions in the sclera over the ciliary body. The method of correcting presbyopia according to the present invention is by making permanent the expansion of the sclera produced by incisions made in the sclera over the ciliary muscle by means of tissue barriers placed in the incisions, preventing contraction of the incision, and acting as a retainer of the increased circumference. With expansion of the posterior chamber, the effective working distance between the lens and ciliary muscle is restored and presbyopia reversed. The tissue barriers of the present invention are solid bars containing pre-placed integral sutures for fixation. Primary open angle glaucoma and ocular hypertension can be treated by increasing the effective working range of the ciliary muscle according to the invention.