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Approximately 50% of all congenital cataract cases may have a genetic cause which is quite heterogeneous. It is known that different mutations in the same gene can cause similar cataract patterns, while the highly variable morphologies of cataracts within some families suggest that the same mutation in a single gene can lead to different ...
The most common congenital infection to cause congenital cataracts is Rubella. [4] Rubella is especially common, with a higher incidence in India. [ 4 ] Rubella is characterized by a triad of features: congenital cataracts, sensorineural hearing loss, and patent ductus arteriosus (a congenital heart condition).
Bilateral cataracts in an infant due to congenital rubella syndrome. Signs and symptoms vary depending on the type of cataract, though considerable overlap occurs. People with nuclear sclerotic or brunescent cataracts often notice a reduction of vision. Nuclear cataracts typically cause greater impairment of distance vision than of near vision.
At some point—usually as you enter middle age—most people develop this eye condition, which is a clouding of the eye’s lens that can get progressively worse and impair your vision. According ...
Congenital cataract is a lens transparency disorder that occurs at birth or soon after. It is a leading cause of treatable vision loss or visual impairment in children. [2] A cataract is a clouding of the eye's lens. and is caused by a disruption in the normal structure or function of the lens protein, resulting in opacity.
Leading causes include retinopathy of prematurity, vitamin A deficiency, infectious diseases (measles, newborn conjunctivitis), retinoblastoma, and congenital conditions (cataracts and glaucoma). [13] Leber congenital amaurosis primarily affects the retina, and typically severe visual impairment begins in infancy. Mutations in Aryl hydrocarbon ...
A cataract is an opacity that develops in the crystalline lens of the eye. [9] The word cataract literally means, "curtain of water" or "waterfall" as rapidly running water turns white, so the term may have been used metaphorically to describe the similar appearance between mature ocular opacities and water fall.
Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. It causes a loss of ability to maintain focus (accommodation), high degree of farsightedness (), [1] and a deep anterior chamber.
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