Visual field Changes due to Lesions in the Optic Nerve and Visual Pathway

Hong, Seung Pyo

Ann Clin Neurophysiol > 2001 ;3(1) > Article

Ann Clin Neurophysiol. 2001; 3(1): 62-64.

Seung Pyo Hong

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

ABSTRACT

Visual symptoms are frequently encountered in the patient with cerebrovascular disease(CVD), whereas these complaints are frequently neglected by the clinician if it occurs in a single eye. Among the visual symptoms following CVD, ischemic optic neuropathy(ION) implies visual disturbances associated with inadequate blood supply of the optic nerve. Vascular insufficiencies involving the optic nerve have three common mechanisms as the CVD, thrombotic, embolic, and hypoperfusion. Monoocular blindness is one of the most frequent complaint of ION, which commonly arises from the opthalmic artery insufficiency. Acute or transient monocular blindness is an ominous sign of following cerebral ischemia, hence early diagnosis and vigorous treatment has an immense significances. Central retinal artery occlusions(CRAO) is usually embolic in nature, and results poor consequencies. Early and accurate diagnosis of ION is important in the treatment and prevention of following CVD.

Key words: Ischemic optic neuropathy(ION), Central retinal artery occlsion(CRAO), Blindness