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A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision of the eye. [ 1 ][ 7 ] Cataracts often develop slowly and can affect one or both eyes. [ 1 ] Symptoms may include faded colours, blurry or double vision, halos around light, trouble with bright lights, and difficulty seeing at night. [ 1 ]
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.
Surgical options if the cataracts are bilateral and the vision is compromised include removing the affected lens of the eye and correcting the vision as early as possible so that the infants eyes can develop normally with visual stimuli. Some congenital cataracts are too small to affect vision, therefore no surgery or treatment will be done.
Childhood cataract is cataract that occurs at birth or in childhood. [ 1] It may be congenital or acquired. Congenital cataracts are defined as the presence of lens opacification during childhood. [ 2] About 1.14 million children in the world are blind. [ 3] Cataracts are the leading cause of blindness in children.
Nyctalopia (/ ˌnɪktəˈloʊpiə /; from Ancient Greek νύκτ- (núkt-) 'night' ἀλαός (alaós) 'blind, invisible' and ὄψ (óps) 'eye'), [1] also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be ...
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception. In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6] The terms low vision and blindness ...