The present invention discloses bioengineered corneal grafts for treating either or both Keratoconus and visual impairment, selected from (i) a corneal Onlay comprises or coated by at least one member of Group A, consisting of biocompatible synthetic materials; at least one member of Group B, consisting of at least one type of biological polymer and optionally, at least one member of Group C, consisting of at least one type of protein and (ii) An intrastromal corneal lenticule graft, configured to mimic native corneal stroma tissue by means of its optical properties, mechanical properties, permeability and interaction with corneal stromal cells; wherein at least one portion of said lenticule comprises or coated by at least one member of Group D, consisting of transparent crosslinked hydrogel; at least one member of Group E, consisting of collagen; collagen methacrylate, recombinant mammal collagen, mammal-sourced collagen; and optionally, at least one member of Group F, consisting of Keratocytes and/or stem cells and any combination thereof. The present invention further discloses compositions, methods for production, implementation and treatment of medical indications by aforesaid corneal graft.

Object of the present invention is a drug delivery system comprising a decellularized corneal stroma scaffold having dispersed within and/or bound to its surface microparticles containing at least one pharmaceutically active molecule dispersed in a matrix having a composition consisting for at least 70% of polylactic co-glycolic acid (PLGA).

Equipment and methods for refractive surgery, including for keratoplasty. The invention describes equipment and methods for the production and implantation of a lamella of a tissue or material for the purpose of correcting a corneal geometry at maximum precision that is thus improved in relation to the prior art. The invention facilitates restoration of normal corneal geometry together with optical functionality of the cornea which is improved in relation to the prior art. A planning device, a treatment system and a planning method are designed to couple a device coordinate systems of the laser devices involved and characterization devices by application of registration and to uniquely register the supplied measurement data for generating the lamella to be implanted to the device coordinate systems by a specific, defined edge geometry of a blank from which the lamella is produced, and by the lamella, and by additional system and method aids.

Ophthalmic tissue delivery devices that include an injector and injector carriers and methods for endothelial keratoplasty surgical procedures are provided. Injectors include a conduit sized to accommodate ophthalmic tissue. One end of the injector is configured for insertion into a patient's eye to inject ophthalmic tissue. Injector carriers include a container, a cap configured to seal an opening of the container. The injector can be coupled to a pressure actuated valve and a syringe where activating the syringe opens the value and allows fluid to flow from the syringe, through the valve, and through the injector to dispense ophthalmic tissue from the injector into a patient's eye without the need to physically contact the ophthalmic tissue.

A device that facilitates preparation of corneal grafts, including an illuminated base; and a corneal graft holder that can be selectively coupled to the illuminated base to illuminate a portion of donor cornea to facilitate preparation of the corneal graft.

A technique can consistently achieve thicknesses of ≤50 μm for corneal tissue for Descemet stripping automated endothelial keratoplasty (DSAEK). Grafts with thicknesses of ≤50 μm are also known as nanothin DSAEK (NT-DSAEK) grafts. Evidence shows that using thinner DSAEK grafts, particularly NT-DSAEK grafts, can significantly improve visual outcomes. According to an example embodiment, a method for producing a corneal graft includes drying a donor cornea to cause a pre-cut thickness of the donor cornea to decrease. The method includes, concurrently with drying the donor cornea, determining pre-cut thickness measurements for the donor cornea. The method includes, in response to the pre-cut thickness measurements indicating the pre-cut thickness of the donor cornea has decreased to a predetermined value, cutting the donor cornea to a post-cut thickness of ≤100 μm, or more particularly ≤50 μm, to produce a corneal graft.

A storage/delivery device includes a first wall defining a well configured to receive a corneal tissue. The storage/delivery device includes a second wall configured to be positioned over the first wall and to seal the well. The second wall includes a recess configured to extend into the well to define a chamber between the first wall and the second wall. The chamber is configured to hold the corneal tissue when the second wall seals the well. A system may include the storage/delivery device above and a measurement system configured to measure the corneal tissue disposed in the well. In one example embodiment, the measurement system is an optical coherence tomography (OCT) system. In another example embodiment, the measurement system is a second-harmonic generation (SHG) or third-harmonic generation (THG) microscopy system.

Reversibly deformable corneal implants for replacing excised corneal tissue, the implants including an optical portion and an anchoring portion having different mechanical properties from each other.

A method of lamellar corneal graft implantation is disclosed herein. In one or more embodiments, the method includes the steps of: (i) modifying a genetic component of a lamellar cornea or other tissue of an animal so that the lamellar cornea or other tissue of the animal can be used for human transplantation; (ii) decellularizing the lamellar cornea or other tissue ex vivo using chemical means; (iii) modifying a shape of the lamellar cornea or other tissue before or after transplantation; and (iv) applying a photosensitizer and ultraviolet radiation to the lamellar cornea or other tissue so as to crosslink collagen and intercellular proteins of the lamellar cornea or other tissue, kill the cells exposed to the photosensitizer, and eliminate an immune response by a host to the implanted lamellar cornea or the tissue.

An ocular implant is constructed of a clear, transparent, biologically compatible material and includes a hydrophilic outer surface configured for continuous attachment to a posterior surface of a cornea. The ocular implant has a first radius of curvature at initial attachment to the posterior surface of the cornea and a second radius of curvature at post-initial attachment to the posterior surface of the cornea. The first radius of curvature is different than the second radius of curvature. The ocular implant remains attached to the posterior surface of the cornea at both the first and second radii of curvature.