Keratoprosthesis devices and kits and surgical methods of their use
The invention provides surgical procedures for implanting a keratoprosthesis in an eye of a subject in need using a kit comprising keratoprosthesis comprising a central optical core, a peripheral skirt around said central optical core, comprising at least one biocompatible polymer; and a marking tool comprising a polymeric surface in the shape of said central optical core.
1. A surgical procedure for implanting a keratoprosthesis in a subject in need there of comprising the steps of:
(1) providing a kit comprising: a keratoprosthesis comprising: (a) a central optical core comprising a central optical lens having an anterior surface, a posterior surface and a radius/diameter; and (b) a peripheral skirt around said central optical core, comprising at least one biocompatible polymer and having a width capable of being placed under a conjunctiva and above a sclera of an eye of a subject in need thereof; wherein said central optical core comprises an anterior rim extending from the anterior surface and a posterior rim extending from the posterior surface; wherein said anterior rim comprises at least two suturing holes and at least two access ports; and wherein said posterior rim comprises at least two extended flanges; and a marking tool comprising a polymeric surface in the shape of said central optical core, having bumps protruding below the polymeric surface, located at the positions of said at least two suturing holes, at least two access ports of the central optical core and a trephination edge;
(2) performing a 360 degree peritomy in an eye of said subject;
(3) performing epithelial debridement;
(4) marking the center of the cornea with a surgical marker;
(5) marking the suturing and access ports on the eye of the subject using the marking tool of the kit using the mark of the center of the cornea for reference;
(6) pre-placing of corneal anchoring suture threads in the marked suturing holes;
(7) intra-cameral injection of epinephrine and (OVD) ophthalmic viscosurgical device;
(8) trephination and removal of central diseased cornea;
(9) approximation of keratoprosthesis of the invention by tying of sutures made in the eye with the suturing holes in the keratoprosthesis;
(10) OVD exchange with balanced salt solution;
(11) tying closure of said conjunctiva of said eye of a subject over the peripheral skirt and rim with sutures.
2. A surgical procedure according to claim 1 , wherein said anterior rim comprises at least three suturing holes.
3. A surgical procedure according to claim 1 , wherein said suturing holes are located at predetermined distance from each other on the anterior rim.
4. A surgical procedure according to claim 1 , wherein said anterior rim comprises at least three access ports.
5. A surgical procedure according to claim 1 , wherein said access ports are located at predetermined distances from each other on the anterior rim.
6. A surgical procedure according to claim 1 , wherein said anterior rim further comprises at least one biocompatible polymer.
7. A surgical procedure according to claim 1 , wherein said posterior rim comprises at least three extended flanges.
8. A surgical procedure according to claim 1 , wherein said extended flanges are located at equivalent distances from each other on the posterior rim.
9. A surgical procedure according to claim 1 , wherein said central optical lens has a radius/diameter of at least 3 mm.
10. A surgical procedure according to claim 1 , wherein said anterior rim has a width of at least 1 mm.
11. A surgical procedure according to claim 1 , wherein said posterior rim has a width of at least 1 mm.
12. A surgical procedure according to claim 1 , wherein said peripheral skirt has a width of at least 3 mm.