| corneal astigmatism | Astigmatism due to a defect in the curvature of the corneal surface. (05 Mar 2000) |
|---|---|
| corneal diseases | Diseases of the cornea. (12 Dec 1998) |
| corneal dystrophies, hereditary | Bilateral hereditary disorders of the cornea, usually autosomal dominant, which may be present at birth but more frequently develop during adolescence and progress slowly throughout life. Central macular dystrophy is transmitted as an autosomal recessive defect. (12 Dec 1998) |
| corneal dystrophy | Central corneal opacification, usually bilateral, symmetrical, and often autosomal recessive, involving predominantly epithelial, stromal, or endothelial layers, often in a typical pattern. (05 Mar 2000) |
| corneal ectasia | A bulging forward of the cornea. Synonym: corneal ectasia, keratectasia. (05 Mar 2000) |
| corneal endothelial polymorphism | A greater than normal variation in the shape of the cells. (05 Mar 2000) |
| 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 opacity | Clouding that can occur in the cornea secondary to inflammation, infection or irritant exposure (foreign body or chemical). Physicians can visualize the corneal for the presence of opacities using the slit lamp (eye scope). (27 Sep 1997) |
| 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) |