what is the meaning of the term xerophthalmia?
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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, which is sometimes used to describe that condition, although there may be other causes.
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Congenital deafblindness is a term used if a person is born with a sight and hearing impairment. This may be due to infections during pregnancy, premature birth, birth trauma and rare genetic conditions. Acquired deafblindness is a term used if a person experiences sight and hearing loss later in life.
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Pigment dispersion syndrome (PDS) and its potential sequela, pigmentary glaucoma (PG), are characterized by disruption of the iris pigment epithelium (IPE) and subsequent deposition of the dispersed pigment throughout the anterior chamber. Once thought to be rare, PDS is now appreciated to be a very common condition.
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Colour vision deficiency is the inability to distinguish certain shades of colour under normal lighting conditions. The term "colour blindness" is more commonly used to describe this visual condition, but very few people are completely colour blind. This condition affects males much more often than females.
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["Behçet's disease of the eye.", "Bietti's crystalline dystrophy.", 'Coloboma.', 'Idiopathic intracranial hypertension.', 'Microphthalmia (missing or small eyes)', 'Retinitis pigmentosa.', 'Retinoblastoma.', 'Stargardt disease.']
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Complete heterochromia is when they have two different colored eyes. Heterochromia of the eye is caused by variations in the concentration and distribution of melanin, the pigment that gives color to the skin, hair, and eyes.
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What we think it means: “Eek, I just saw something X-rated.” What it actually means: Dizzy Face. Face with crosses as eyes that looks like xx. Raised eyebrows and a wide-open mouth. Also known as: Cross-eyed face.
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Ocular melanocytosis is a congenital condition that manifests as slate-gray or bluish patchiness on the sclera, the white portion of the eye. ... As far as i know that aging can cause the change of the eye color - the whites of your eyes turn grey or yellow.
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This disease has a hereditary component. Researchers have identified several genes that are related to developing the condition. Race. Macular degeneration is more common in Caucasians.
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Some people develop heterochromia later in life, however. This is known as acquired heterochromia, and it may occur from an underlying condition such as: eye injury.
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It occurs in humans and certain breeds of domesticated animals. Heterochromia of the eye is called heterochromia iridum or heterochromia iridis. It can be complete or sectoral. In complete heterochromia, one iris is a different color from the other.
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Very simply, Strabismus, the medical term for "crossed-eye", is a problem with eye alignment, in which both eyes do not look at the same place at the same time. Amblyopia, the medical term for "lazy-eye", is a problem with visual acuity, or eyesight.
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Heterochromia of the eye is called heterochromia iridum or heterochromia iridis. It can be complete or sectoral. In complete heterochromia, one iris is a different color from the other.
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The definition of visual impairment is “a decrease in the ability to see to a certain degree that causes problems not fixable by usual means, such as glasses.” Blindness is “the state of being unable to see due to injury, disease or genetic condition.” ... Totally blind refers to a complete loss of sight.
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Medical Definition of Amblyopia. Amblyopia: Partial or complete loss of vision in one eye caused by conditions that affect the normal development of vision.
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Childhood glaucoma — also referred to as congenital glaucoma, pediatric, or infantile glaucoma — occurs in babies and young children. It is usually diagnosed within the first year of life. This is a rare condition that may be inherited, caused by incorrect development of the eye's drainage system before birth.
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Xanthelasma are cholesterol-filled plaques that usually appear on the eyelids. About half of people with xanthelasma have elevated levels of cholesterol, triglycerides, or other blood fats. About 50% of adults with xanthelasma have some type of hyperlipidemia.