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Osteo-odonto-keratoprosthesis (OOKP), also known as "tooth in eye" surgery, [1] is a medical procedure to restore vision in the most severe cases of corneal and ocular surface patients. It includes removal of a tooth from the patient or a donor.
The external portion of the ocular prosthesis is painted and finished to mimic a natural eye color, shape and luster. [8] It can be removed and cleaned periodically by the individual or a care giver. [8] The two part system of orbital implant and ocular prosthesis provides a stable, and well tolerated aesthetic restoration of the eye socket. [8]
Usually, these implants are covered with a material that permits fixation of the extraocular recti muscles, such as donor sclera or polyester gauze which improves implant motility, but does not allow for direct mechanical coupling between the implant and the artificial eye. [7]
Teeth with non-negotiable root canals should not be selected as abutments. Implant-supported. Edentulous patients with sufficient amount of bony ridge on their jaws can opt for implant supported overdenture. [4] This type of over denture gains support from both the dental implants and intraoral tissues.
The close proximity between the implant and the retina also increases the possibility of thermal damage to the retina from heat generated by the implant. [4] Subretinal implants require intact inner and middle retinal layers, and therefore are not beneficial for retinal diseases extending beyond the outer photoreceptor layer.
The head of the zygoma implant is engineered to allow prosthesis attachment at a 45-degree angle to the long axis of the implant. [7] Zygomatic implants can be used in patients who do not have any teeth in the upper jaw, patients who have heavily broken down teeth or very mobile teeth due to diseases such as generalised aggressive periodontitis ...
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Unlike subdermal implants and other new body modification procedures, the extraocular implant is currently only being performed in a medical clinic environment. The procedure is relatively quick, but it does require that both eyes be immobilized with anesthetic drops, and that the layers of the eyeball where the implant is situated must be separated by the injection of liquid.