TNOA Journal of Ophthalmic Science and Research

CASE REPORT
Year
: 2020  |  Volume : 58  |  Issue : 3  |  Page : 194--196

Chiasmic blindness: Hunted down


J P Justin Prashanth1, Hannah Ranjee Prasanth1, Renuka Srinivasan1, Ramesh Kannan2 
1 Department of Ophthalmology, Pondicherry Institute of Medical Sciences, Kalapet, Puducherry, India
2 Department of Neurology, Pondicherry Institute of Medical Sciences, Kalapet, Puducherry, India

Correspondence Address:
Dr. J P Justin Prashanth
T2 A Block, Akshara Apartments, Vallalar Nagar, Kalapet, Puducherry - 605 014
India

We report a rare case of the left-sided anterior chiasmal lesion causing junctional scotoma. A 50-year-old female presented with sudden, painless complete loss of vision in the left eye with no perception of light and Grade IV relative afferent pupillary defect. The rest of the anterior segment and fundus of both eyes were normal. Visual fields of the right eye showed temporal hemianopia. Computed tomography of the brain plain and contrast showed a space-occupying lesion in the suprasellar region extending into the left optic canal compressing the left anterior chiasma. A junctional scotoma due to compression of the left anterior chiasma was diagnosed which is usually caused by lesions such as pituitary adenoma, meningiomas, cerebral aneurysms, and ischemic anterior chiasmal lesions. This usually resolves after intracranial decompression surgeries but the ischemic etiology carries a poor prognosis.


How to cite this article:
Prashanth J P, Prasanth HR, Srinivasan R, Kannan R. Chiasmic blindness: Hunted down.TNOA J Ophthalmic Sci Res 2020;58:194-196


How to cite this URL:
Prashanth J P, Prasanth HR, Srinivasan R, Kannan R. Chiasmic blindness: Hunted down. TNOA J Ophthalmic Sci Res [serial online] 2020 [cited 2020 Oct 20 ];58:194-196
Available from: https://www.tnoajosr.com/article.asp?issn=2589-4528;year=2020;volume=58;issue=3;spage=194;epage=196;aulast=Prashanth;type=0