congenital cataract

opacity of the lens of the eye that is present at birth or occurs soon after birth. Its effect is to scatter light and blur the image on the retina, which prohibits the development of pattern vision because of visual deprivation. Central vision is always affected, and peripheral vision may also be reduced. Congenital cataract can occur in one or both eyes; it may be hereditary or caused by congenital infection or metabolic disorders.

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Psychology term of the day

May 9th 2024

binocular summation

the phenomenon of increased sensation or increased magnitude of perceptual response that results from stimulation through both eyes, as compared to stimulation through one eye.