Like black and white cookies or pizza-by-the-slice, hearing ranges widely in quality.
One attempt to standardize the diagnosis and treatment is the implementation of degrees of hearing loss. Audiologists break hearing loss into five degrees: mild, moderate, moderately severe, severe and profound. Patients are categorized into a degree by the softest sound they are able to hear.
If the softest sound a patient can hear is above 71 decibels but below 90 decibels, he is categorized as having severe hearing loss. While this diagnosis might be helpful in fitting a hearing aid and combating the affects of hearing loss, the boundaries are clearly somewhat arbitrary. Rather than iron-clad prescriptions, these designations should be looked at more as guidelines. A sufferer of severe hearing loss might have hearing closer to a sufferer of “moderately severe hearing loss” than another person with severe hearing loss.
Other than in legal contexts, where severe hearing loss is converted into a percentage to ensure equal treatment in the eyes of the law, the degree to which hearing loss occurs is more of a suggestion than a fact. If you feel like you might be suffering from hearing loss, visit a hearing center to determine the best course of treatment.