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).
The significance of visual information processing in reading: Insights from
hemianopic dyslexia.
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 cat.
This patient reported experiencing visual hallucinations in the
hemianopic field only.
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.[7] Psychosis with accompanying visual hallucination may present a confusing picture.