Caption: Figure 2A Visual representation of a left hemianopic
defect; (13) 2B Perimetric data showing a left hemianopia; 2C Perimetric data showing a left superior quadrantanopia
Optic tract syndrome (OTS) is caused by a unilateral optic tract lesion, which leads to homonymous hemianopia, relative afferent pupillary defect (RAPD) in the contralateral eyes, and characteristic hemianopic
optic atrophy in both eyes [1-3].
Kolmel, "Complex visual hallucinations in the hemianopic
field," Journal of Neurology Neurosurgery and Psychiatry, vol.
Vision recovers in the hemianopic
field in stages starting with perception of light and followed by motion, form, colour and stereognosis in that order.
Several adult patients with low vision have come to the Advanced Low Vision Clinic at the Corporal Michael Crescenz Department of Veterans Affairs Medical Center (CMCVAMC), in Philadelphia, Pennsylvania, and to the Bucks County Association for the Blind and Visually Impaired, in Newton, Pennsylvania, with a diagnosis of hemianopic
loss secondary to a stroke in the visual cortex; brain tumors; or traumatic brain injury.
Assessments of visual function include screening for: refractive errors, visual acuity, contrast sensitivity, visual fields (including peripheral, hemianopic
and central fields), occulomotor functions and binocular vision (Weisser-Pike, 2014).
In the first part of the project we will employ behavioural as well as brain imaging methods to study the basic neural mechanisms of blindsight, that is, above chance visually guided behaviour in hemianopic
patients in the absence of visual awareness.
The significance of visual information processing in reading: Insights from hemianopic
Visual capacity in the hemianopic
field following a restricted occipital ablation.
Ibotenic acid lesions of the lateral substantia nigra restore visual orientation behavior in the hemianopic
This patient reported experiencing visual hallucinations in the hemianopic
A rare focal lesion over the visual cortex or involving its connections has been known to simulate exactly the progression of the migrainous hemianopic
scotoma. Psychosis with accompanying visual hallucination may present a confusing picture.