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  • Title: Wall-eyed bilateral internuclear ophthalmoplegia in central nervous system cryptococcosis.
    Author: Fay PM, Strominger MB.
    Journal: J Neuroophthalmol; 1999 Jun; 19(2):131-5. PubMed ID: 10380136.
    Abstract:
    Only one case of wall-eyed bilateral internuclear ophthalmoplegia (WEBINO) has been described in central nervous system cryptococcosis. The disorder was initially unilateral, then became bilateral with skew deviation and vertical upgaze deficit. We report a case of WEBINO in central nervous system cryptococcosis in a patient with acquired immune deficiency syndrome. Magnetic resonance imaging revealed high signal on T2 images in the right midbrain, left frontal vertex, left splenium, and cerebellum. With treatment, the internuclear ophthalmoplegia improved; however, the convergence insufficiency remained. Disruption of input from cortical supranuclear locations or the region of the rostral interstitial nucleus of the medial longitudinal fasciculus has been proposed as a mechanism in the absence of convergence. This correlates in our patient with the lesions seen on magnetic resonance images.
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