Non-sliding and non-sutured contact lens system for ophthalmic procedures
A non-sliding, non-sutured hands-free contact lens assembly for ophthalmic procedures utilizes a number of microstructures strategically placed on the bottom of either the contact lens or the bottom of a contact lens holder ring. After the contact lens, or the contact lens assembled with the contact lens holder ring, is placed on the cornea of the eye and centered, a surgeon applies downward pressure either on the contact lens itself or on the lens holder ring. This secures the lens assembly to the cornea due to increased friction between the microstructures and the tissues of the eye when the microstructures penetrate through the tear film and, optionally, viscous solution film and into the contact with superficial layer of cornea or other parts of the eye, thus temporarily anchoring the contact lens, or lens holder, to the desired surgical site.
1. A contact lens assembly for ophthalmic procedures on a patient's eye, the patient's eye including a cornea covered with a corneal superficial layer and a tear film covering the corneal superficial layer, comprising: at least one optical element having an eye contact surface, and an anchoring mechanism formed on said eye contact surface integrally therewith, said anchoring mechanism being configured with microstructures disposed at predetermined positions on said eye contact surface of said at least one optical element, wherein, when during an ophthalmic procedure said at least one optical element is positioned on a procedure site, said microstructures of said anchoring mechanism extend vertically downward from said eye contact surface of said at least one optical element through the tear film of the patient's eye into contact with the corneal superficial layer of the patient's eye at said procedure site, thus creating friction between said eye contact surface of said at least one optical element and the corneal superficial layer of the patient's eye resulting in an anchoring force retaining said at least one optical element at said procedure site during the ophthalmic procedure, wherein a length of said microstructures does not exceed 10 μm to prevent the cornea from deep penetration by said microstructures further than the corneal superficial layer of the patient's eye.
2. The contact lens assembly for ophthalmic procedures of claim 1 , wherein said microstructures of said anchoring mechanism include at least one microstructure selected from a group comprising: micro-pins, micro-grips, micro-barbs, micro-needles, textured micro-elements, and combinations thereof.
3. The contact lens assembly for ophthalmic procedures of claim 1 , wherein said microstructures are formed on said eye contact surface by a mechanism selected from a group comprising: threaded connection, adhesion, gluing, pressing, thermo-soldering, 3-D printing, interlocking tab, groove locking, chemical etching, chemical vapor deposition, plasma machining, photolithography, and combinations thereof.
4. The contact lens assembly for ophthalmic procedures of claim 1 , wherein said microstructures are fabricated from a material selected from a group consisting of: surgical steel, bio-compatible plastic, polyether ether ketone (PEEK) polymer, and combinations thereof.