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Choroideremia (/ k ɒ ˌ r ɔɪ d ɪ ˈ r iː m i ə /; CHM) is a rare, X-linked recessive form of hereditary retinal degeneration that affects roughly 1 in 50,000 males. The disease causes a gradual loss of vision, starting with childhood night blindness, followed by peripheral vision loss and progressing to loss of central vision later in life.
Intraocular hemorrhage is classified based on the location of the bleeding: Hyphema (in the anterior chamber); Suprachoroidal hemorrhage (SCH) is a rare complication of intraocular surgery in which blood from the ciliary arteries enters the space between the choroid and the sclera.
Choroideremia-deafness-obesity syndrome This condition is inherited in an X-linked recessive manner. Ayazi syndrome (or Chromosome 21 Xq21 deletion syndrome ) [ 1 ] is a syndrome characterized by choroideremia , congenital deafness and obesity .
Eye injury or eye surgery; Zygoma fracture (results in lateral subconjunctival bleeding) Medical conditions that affect blood or blood vessels: Severe hypertension; Viral hemorrhagic fever; Coagulation disorder (congenital or acquired) Acute hemorrhagic conjunctivitis (caused by including enterovirus 70, coxsackievirus A24 variant, and ...
Symptoms include a rounded face, a fatty lump between the shoulders, and pink or purple stretch marks on the skin. It can also lead to high blood pressure, bone loss and type 2 diabetes, according ...
It may be inherited, or caused by genetic mosaicism, chimerism, disease, or injury. [2] 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, sectoral, or central. In complete heterochromia, one iris is a different color from the other.
This produces a dark red staining of the muscle fibers given the name "ragged red fibers". While ragged red fibers are seen in normal aging, amounts in excess of normal aging give a diagnosis of a mitochondrial myopathy. [citation needed] Polymerase chain reaction (PCR) from a sample of blood or muscle tissue can determine a mutation of the mtDNA.
Coats' usually affects only one eye (unilateral) and occurs predominantly in young males 1/100,000, with the onset of symptoms generally appearing in the first decade of life. Peak age of onset is between 6–8 years of age, but onset can range from 5 months to 71 years. [2] [3] Coats' disease results in a gradual loss of vision.