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Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [ 1 ] which is sometimes used to describe that condition, although there may be other causes.
Dry eye syndrome, also known as keratoconjunctivitis sicca, is the condition of having dry eyes. [2] Symptoms include dryness in the eye, irritation, redness, discharge, blurred vision, and easily fatigued eyes. Symptoms range from mild and occasional to severe and continuous. [3]
Xeroradiography is a type of X-ray imaging in which a picture of the body is recorded on paper rather than on film.In this technique, a plate of selenium, which rests on a thin layer of aluminium oxide, is charged uniformly by passing it in front of a scorotron. [1]
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(H52.2) Astigmatism — the cornea or the lens of the eye is not perfectly spherical, resulting in different focal points in different planes (H52.3) Anisometropia — the lenses of the two eyes have different focal lengths (H52.4) Presbyopia — a condition that occurs with growing age and results in the inability to focus on close objects
Examples of local dryness include dry mouth, dry eyes, dry skin , Diabetic foot and vaginal dryness. These often have specific causes and treatments. These often have specific causes and treatments. It is possible to have dry eyes without any other signs or symptoms, but this usually causes a syndrome of eye symptoms called keratoconjunctivitis ...
VP6, Sorenson Spark, Screen video, Screen video 2, H.264 MP3 , ADPCM , Nellymoser , Speex , AAC Use of the H.264 and AAC compression formats in the FLV file format has some limitations and authors of Flash Player strongly encourage everyone to embrace the new standard F4V file format [ 2 ] de facto standard for web-based streaming video (over ...
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