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Sclera
Sclera The sclera is the white part of the eye. The clear cornea is the front extension of the sclera.
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Sclera
The sclera is the white part of the eye. The clear cornea is the front extension of the sclera.
Eye
The organ of sight. The eye has a number of components. These components include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic nerve, choroid and vitreous.
Cornea
The front part of the eye that acts as a window for the entrance of light rays. It is attached to the other outer coat of the eye, the sclera; the white part of the eye. The cornea provides a significant amount of focusing power for the eye (the rest is provided by the lens). Because it has many nerve fibers, an injury or foreign body causes significant pain and discomfort.
Extension
The process of straitening or the state of being strait. Extension of the hip and knee joints is necessary to stand up from the sitting position.
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Scleritis
Inflammation of the sclera, causing pain, redness and possible loss of vision. Can be a complication of rheumatoid arthritis.
Scleroderma
A relatively rare form of arthritis in which the body produces too much collagen. Excess collagen may be deposited in the skin, joints, and other body organs. Scleroderma is a chronic disorder marked by hardening and thickening of the skin.
Scleroma
A hardened patch of skin or mucous membrane.
Sclerosis
Hardening.
Sclerosol
Sclerosol is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): talc.
Sclerotherapy
A method of stopping upper GI bleeding. A needle is inserted through an endoscope to bring hardening agents to the place that is bleeding.
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Synovitis
Inflammation of the synovium
Systemic lupus erythematosus
The commonest connective tissue disorder in which the commonest clinical features are dermatological (often with photosensitivity) and rheumatological.
Systemic sclerosis
A form of scleroderma.
Sulpiride
An antipsychotic drug.
Secobarbital
A hypnotic substance.
Sclera
Scotoma
An absence of vision in part of the visual field. It is present in such conditions as glaucoma, or in more serious diseases within the brain. Often detected by a visual field test.
Snellen chart
The familiar eye chart with larger letters at the top and smaller ones at the bottom. It is used for measuring central vision.
Staphyloma
An abnormal bulging of the cornea or sclera. It is usually a congenital problem.
Stereopsis
Also known as depth perception. The separation between the eyes provides for slightly different views of an object by each eye. The brain for the purpose of telling the location of an object in 3D space uses this difference in views between the eyes or disparity.
Strabismus
Misaligned eyes. See exotropia, esotropia and hyperopia.
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