| D008297 |
Male |
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Males |
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| D008875 |
Middle Aged |
An adult aged 45 - 64 years. |
Middle Age |
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| D003315 |
Cornea |
The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed) |
Corneas |
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| D003316 |
Corneal Diseases |
Diseases of the cornea. |
Corneal Disease,Disease, Corneal,Diseases, Corneal |
|
| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
|
| D014792 |
Visual Acuity |
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast. |
Acuities, Visual,Acuity, Visual,Visual Acuities |
|
| D015948 |
Keratoplasty, Penetrating |
Partial or total replacement of all layers of a central portion of the cornea. |
Keratoplasties, Penetrating,Penetrating Keratoplasties,Penetrating Keratoplasty |
|
| D018450 |
Disease Progression |
The worsening and general progression of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis. |
Clinical Course,Clinical Progression,Disease Exacerbation,Exacerbation, Disease,Progression, Clinical,Progression, Disease |
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