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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.
Retinitis pigmentosa is the leading cause of inherited blindness, [51] with approximately 1/4,000 individuals experiencing the non-syndromic form of their disease within their lifetime. [52] It is estimated that 1.5 million people worldwide are currently affected.
Chorioretinitis is an inflammation of the choroid (thin pigmented vascular coat of the eye) and retina of the eye. It is a form of posterior uveitis.Inflammation of these layers can lead to vision-threatening complications.
The retina is the eye's "sensing" tissue. Retinitis may be caused by a number of different infectious agents. Its most common form, called retinitis pigmentosa, has a prevalence of one in every 2,500–7,000 people. This condition is one of the leading causes that leads to blindness in patients in the age range of 20–60 years old.
Retinitis pigmentosa is an inherited disease which leads to progressive night blindness and loss of peripheral vision as a result of photoreceptor cell death. [ 29 ] [ 33 ] [ 34 ] Most people who suffer from RP are born with rod cells that are either dead or dysfunctional, so they are effectively blind at nighttime, since these are the cells ...
Neuropathy, ataxia, and retinitis pigmentosa, also known as NARP syndrome, is a rare disease with mitochondrial inheritance that causes a variety of signs and symptoms chiefly affecting the nervous system [1] Beginning in childhood or early adulthood, most people with NARP experience numbness, tingling, or pain in the arms and legs (sensory neuropathy); muscle weakness; and problems with ...
The most common cause of nyctalopia is retinitis pigmentosa, a disorder in which the rod cells in the retina gradually lose their ability to respond to the light. Patients with this genetic condition have progressive nyctalopia and eventually, their daytime vision may also be affected.
A unilateral decrease in visual acuity is the most common symptom of toxoplasmic retinitis. Under ophthalmic examination, toxoplasmic chorioretinitis classically appears as a focal, white retinitis with overlying moderate inflammation of the vitreous humour. The inflamed vitreous, when it obscures the view of the fundus, is described as having ...
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