Gel of crosslinked hyaluronic acid for use as a vitreous humor substitute
First Claim
1. In the retinal surgery method in which a viscous fluid is introduced into an intraocular space enclosed between a rear boundary formed by the retina and a frontal boundry normally formed by the lens and the ciliary body, so that the pressure applied on the receptor layer by the viscous fluid, conjointly with any remaining portions of natural humor, will cause the receptor layer to lie in contact with the pigment epithelial layer for a period of time sufficient for healing, the improvement comprising that said viscous fluid contains a sterile and pyrogen-free gel of cross-linked hyaluronic acid.
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Accused Products
Abstract
The invention is concerned with a vitreous humor substitute intended for ophthalmological uses and consisting of a gel of crosslinked hyaluronic acid and a method at retinal surgery and after vitrectomy when the vitreous humor completely or partially is exchanged for such a gel.
173 Citations
16 Claims
- 1. In the retinal surgery method in which a viscous fluid is introduced into an intraocular space enclosed between a rear boundary formed by the retina and a frontal boundry normally formed by the lens and the ciliary body, so that the pressure applied on the receptor layer by the viscous fluid, conjointly with any remaining portions of natural humor, will cause the receptor layer to lie in contact with the pigment epithelial layer for a period of time sufficient for healing, the improvement comprising that said viscous fluid contains a sterile and pyrogen-free gel of cross-linked hyaluronic acid.
- 2. In the method following vitrectomy in which a viscous fluid is introduced into an intraocular space enclosed between a rear boundary formed by the retina and a frontal boundary normally formed by the lens and the ciliary body or in aphatic eyes formed by the cornea, in a manner such that said viscous fluid, together with any remaining natural vitreous humor, will fill out all of said intraocular space, the improvement comprising that said viscous fluid contains a sterile and pyrogen-free gel of crosslinked hyaluronic acid.
Specification