cortical blindness


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cor·ti·cal blind·ness

loss of sight due to an organic lesion in the visual cortex.

cortical blindness

n.
Loss of sight due to an organic lesion in the visual cortex.

cortical blindness

[kôr′tikəl]
Etymology: L, cortex + AS, blind
loss of vision that results from a lesion in the visual center of the cerebral cortex of the brain.

cor·ti·cal blind·ness

(kōr'ti-kăl blīnd'nĕs)
Loss of sight due to an organic lesion in the visual cortex.

blindness

lack or loss of ability to see. Diagnosed in an animal on the absence of a menace reflex, walking into obstructions and failure to indicate awareness of a soundless movement in its visual field, e.g. a falling cotton ball or feather.

Appaloosa night blindness
bright blindness
toxic retinopathy in sheep grazing bracken; characterized by blindness, dilated pupils, poor pupillary light reflex, retinal degeneration.
central blindness
due to a lesion of the optic cortex; the pupillary light reflex still functions. Called also cortical blindness.
cortical blindness
see central blindness (above).
day blindness
defective vision in bright light. See also hemeralopia.
inherited congenital blindness
occurs in a number of breeds of cattle in which there are several defects in the eyes including irideremia, microphakia, ectopia lentis and cataract.
night blindness
failure or imperfection of vision in conditions of diminished illumination; a characteristic of progressive retinal atrophy.
peripheral blindness
blindness due to a lesion in the optical apparatus peripheral to the optical cortex, including lesions in the optic chiasma, optic nerve, retina, anterior and posterior chambers, lens and cornea. With the exception of obvious lesions in the eyeball this is characterized by dilatation of the pupil and absence of the pupillary light reflex.
References in periodicals archive ?
Imagery without perception--A case study of anosognosia for cortical blindness.
Cortical blindness in severe preeclampsia: computed tomography, magnetic resonance imaging, and single-photon-emission tomography findings.
4,5) Other findings such as central retinal vein occlussion, vitreous hemorrhage and cortical blindness have also been reported in HELLP syndrome.
Transient cortical blindness after coronary angiography and bypass graft is a very rare complication.
At 1 year of age, the child suffers from a seizure disorder, cortical blindness, and severe developmental delays.
Transient cortical blindness after coronary angiography or angioplasty is a rare complication.
35) Cortical blindness is a neurological sequelae of cerebral malaria and because it is reversible, its pathogenesis has been attributed to transient ischaemia.
In 1990, the authors also put into motion an effort to eliminate use of the term cortical blindness, since children in the study and elsewhere demonstrated gradual increased visual function, which made CVI a more accurate term, especially for parents who were confused by the "blindness" label when they observed their children using residual vision in daily routines.
Cortical blindness after left internal mammary artery to left anterior descending coronary artery graft angiography.
We are the guardians of our ten-year-old granddaughter who has cerebral palsy, seizure disorder, cortical blindness and does not speak or walk.