lazy eye

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lazy eye2016-11-11T08:54:01+00:00

lazy eye


Definition A popular term for a visual disorder that affects 1-5% of the general population, which is characterised by poor vision in an eye that is either physically normal, or not as impaired as the eye exam suggests.

The term lazy eye (LE) is incorrect as neither the eye nor its owner are lazy. Lazy brain is closer to the condition’s mechanism. The term lazy eye has also been used as synonym for strabismus, particularly exotropia.

Types of LE

Functional amblyopia No underlying pathology; visual impairment is either sensory deprivation amblyopia, which may be the long-term result of anisometropia–mismatch of the refractive state of the eyes or due to inhibition of visual sensation–i.e., misuse 

Organic amblyopia A pathological change affects the visual pathways including macular scarring seen in chorioretinitis, retrolental fibroplasia, retinoblastoma, optic atrophy, meningoencephalitis and other organic lesions


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