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Treatment of Nystagmus in Brainstem Cavernous Malformation with Botulinum Toxin.

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Treatment of Nystagmus in Brainstem Cavernous Malformation with Botulinum Toxin. °ä³Ü°ù±ð¯³Ü²õ Chen, Y., Fredrick, D., Steinberg, G. K., Liao, Y. J. 2016; 8 (4)

Abstract

We report a long-term eye movement study of a 68-year-old female with pontomedullary junction cavernous malformation whose dysconjugate nystagmus was treated with retrobulbar botulinum toxin A injections. Sequential, bilateral retrobulbar injections of botulinum toxin A were performed. Injections immediately decreased oscillopsia and nystagmus, and improved visual acuities. One to three months following injection, three-dimensional infrared oculography measured a significant 39-100% (P = 0.001) decrease in nystagmus amplitudes at multiple dimensions. This improvement diminished by six months in the right eye but sustained for about one year in the left eye. Over two years, botulinum toxin A injections were performed twice in the left eye and five times in the right eye. Our study supported the safe and effective use of repetitive retrobulbar botulinum toxin A injections in symptomatic nystagmus that failed medical therapy.

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