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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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ORIGINAL ARTICLE
Year : 2007  |  Volume : 14  |  Issue : 2  |  Page : 51-53

A comparison between the ice test and single-fiber electromyography (SFEMG) in the diagnosis of ptosis caused by myasthenia gravis


1 Department of Ophthalmology, Cairo University, Cairo, Egypt
2 Department of Neurology, Cairo University, Cairo, Egypt

Correspondence Address:
Essam A El-Toukhy
14-A El-Sobki Street #23, Dokki, Cairo-12311
Egypt
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Source of Support: None, Conflict of Interest: None


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Purpose. To compare the results of the ice test with those attained with single-fiber electromyography (SFEMG) in the diagnosis of ocular myasthenia gravis (MG). Patients and Methods. Ice was placed on the upper lids of 14 patients (10 females, 4 males) with ptosis who were suspected of having MG; the change in lid height was noted. After SFEMG was performed, the results of the 2 tests were then compared. Results. A positive response to the ice test was elicited in 12 (85.7%) patients. All 12 patients with a positive ice test had abnormal SFEMG findings. Both patients with a negative ice test had normal SFEMG findings. Conclusion. A positive response to the ice test is a sensitive method of diagnosing ptosis caused by MG and correlates well with SFEMG testing.


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