A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 9/013 (2006.01) A61F 9/009 (2006.01) A61F 9/01 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2319087
An accelerated method of orthokeratology includes the steps of softening of the cornea (10) with a softening agent, applying a mold (36) to reshape the cornea (10) to a desired anterior curvature, and rapidly restabilizing or "fixing" the corneal tissues so that the cornea retains its new configuration. A chemical softening agent, such as glutaric anhydride is applied to the cornea (10) to soften the cornea, after which a specially designed mold (36) of predetermined curvature and configuration is applied to the cornea. Pressure is applied to the mold to re-shape the cornea. The mold (36) is maintained in position while a stabilizing agent, such as a UV light source (96), is positioned above the mold (36). The stabilizing agent, i.e. UV light, is applied to the cornea (10) wherein the stabilizing agent immediately restabilizes the corneal tissue so that the cornea retains its shape upon removal of the mold (36).
L'invention concerne une méthode accélérée d'orthokératologie dont les diverses étapes consistent: à amollir la cornée (10) à l'aide d'un agent amollissant, à appliquer un moule (36) pour redonner à la cornée (10) une courbure antérieure voulue, et à rapidement restabiliser ou "fixer" les tissus cornéens de manière que la cornée conserve sa nouvelle configuration. Un agent amollissant chimique, tel que l'anhydride glutarique, est appliqué sur la cornée (10) afin de l'amollir, puis un moule (36) spécialement conçu présentant une courbure et une configuration prédéterminées est appliqué sur la cornée. On applique une pression sur le moule pour reprofiler la cornée. Le moule (36) est maintenu en place, tandis qu'un agent stabilisant, tel qu'une source (96) de rayons ultraviolets, est positionné au-dessus du moule (36). L'agent stabilisant, c'est-à-dire le rayonnement ultraviolet, est appliqué sur la cornée (10), ce qui permet à l'agent stabilisant de restabiliser immédiatement les tissus cornéens de manière que la cornée conserve sa forme lorsqu'on retire le moule (36).
Devore Dale P.
Oefinger Rory H.
Ista Pharmaceuticals Inc.
Keratoform Inc.
Sim & Mcburney
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