| corneal facet | A corneal depression following loss of stroma. (05 Mar 2000) |
|---|---|
| corneal graft | corneal transplant |
| corneal layer of epidermis | The outer layer of the epidermis, consisting of several layers of flat keratinised non-nucleated cells. Synonym: corneal layer of epidermis, horny layer of epidermis. (05 Mar 2000) |
| corneal lens | Contact lens of plastic without scleral portions. (05 Mar 2000) |
| corneal margin | The margin of the cornea overlapped by the sclera. Synonym: limbus corneae, corneal margin, sclerocorneal junction. (05 Mar 2000) |
| corneal neovascularization | New blood vessels originating from the corneal veins and extending from the limbus into the adjacent corneal stroma. These vessels may lie in the superficial and/or deep corneal stroma. Neovascularization is a sequel to numerous inflammatory diseases of the ocular anterior segment, including trachoma, viral interstitial keratitis, microbial keratoconjunctivitis, and the immune response elicited by corneal transplantation. (12 Dec 1998) |
| corneal oedema | An excessive amount of fluid in the cornea due to damage of the epithelium or endothelium causing decreased visual acuity. (12 Dec 1998) |
| corneal pannus | Fibrovascular connective tissue that proliferates in the anterior layers of the peripheral cornea in inflammatory corneal disease, particularly trachoma in which the pannus involves the superior cornea. Three forms occur: (05 Mar 2000) |
| corneal reflex | A contraction of the eyelids when the cornea is lightly touched with a camel-hair pencil. Synonym: lid reflex. Reflection of light from the surface of the cornea. (05 Mar 2000) |
| corneal space | One of the stellate space's between the lamellae of the cornea, each of which contains a cell or corneal corpuscle. Synonym: lacuna. (05 Mar 2000) |
| corneal spot | A moderately dense opacity of the cornea. Synonym: corneal spot. (05 Mar 2000) |
| corneal staphyloma | A bulging near the anterior pole of the eyeball. Synonym: corneal staphyloma. (05 Mar 2000) |
| corneal stroma | The lamellated connective tissue constituting the thickest layer of the cornea between the bowman and descemet membranes. (12 Dec 1998) |
| corneal topography | Measurement of the anterior surface of the cornea, its curvature and shape. It is used often to diagnose keratoconus and other corneal diseases, and corneal changes after keratotomy and keratoplasty. A significant application is in the fitting of contact lenses. In performing corneal topography, many different techniques can be employed: keratometry, keratoscopy, photokeratoscopy, profile photography, computer-assisted image processing, etc. (12 Dec 1998) |
| corneal transplant | A surgical procedure to replace a damaged cornea with a healthy one from a donor's eye. Unlike transplantation of most other organs, the cornea tends to have a problem with transplant rejection. Corneal transplants are indicated in cases of severe corneal injury or corneal infection (corneal ulcer) which has left the cornea scarred. (27 Sep 1997) |