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International Journal of Otolaryngology
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International Journal of Otolaryngology
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2013
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Article
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Tab 1
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Clinical Study
Long-Term Effect of Enzyme Replacement Therapy with Fabry Disease
Table 1
Grades of severity of hearing loss. In Japan, the severity of SSNHL has been classified as follows.
Grade 1
Less than 40 dB
Grade 2
More than 40 dB, less than 60 dB
Grade 3
More than 60 dB, less than 90 dB
Grade 4
90 dB or more