Search results
Results from the WOW.Com Content Network
The X-linked varieties of congenital stationary night blindness (CSNB) can be differentiated from the autosomal forms by the presence of myopia, which is typically absent in the autosomal forms. Patients with CSNB often have impaired night vision, myopia, reduced visual acuity, strabismus and nystagmus.
The first evidence of the existence of mutation in NYX gene, encoding the leucine-rich proteoglycan nyctalopin, cause X-linked complete congenital stationary night blindness was provided by Richard G. Weleber at the University of Alberta in 2000. [2]
In X-linked congenital stationary night blindness, from birth the rods either do not work at all, or work very little, but the condition does not get worse. Another cause of night blindness is a deficiency of retinol, or vitamin A 1, found in fish oils, liver and dairy products.
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.
The X-linked forms of the disease are considered severe, and typically lead to complete blindness during later stages. In rare occasions, a dominant form of the X-linked gene mutation will affect both males and females equally. [53]
Night blindness, on the other hand, which is also referred to as nyctalopia, is a condition in which someone has extreme difficulty or loses the ability to see in the dark or in dimly lit areas ...
There is currently an estimation of 867 X-linked genes identified, with over 533 diseases related to X-linked genes. Common X-linked genetic diseases include Red-green colour blindness, which affects an individual's ability to see red or green images; X-linked agammaglobulinemia, resulting in a deficiency of immunity; Duchenne Muscular ...
Researchers then analyzed the rate of patients diagnosed with NAION, a rare condition that is the second-leading cause of optic nerve blindness. NAION is believed to be caused by reduced blood ...