Unilateral loss is the loss of a particular sense on one side or of one of a pair of sense organs. Unilateral loss most frequently refers to unilateral hearing loss (UHL) or unilateral vision loss (UVL). In either case, unilateral loss indicates the affected organ does not operate to its full potential. In the instance of UHL or single-sided deafness (SSD), one ear hears fine while the other is impaired. The causal factors may be acoustic neuroma, measles, meningitis, mumps, microtia or physical trauma. The severity of the impaired ear may be mild. It could also be profound. Profound UHL produces a variety of symptomatic behavior including disorientation, anxiety and headaches. In the case of UVL, the causal factors of physical trauma and specific disease, age or degenerative issues may affect one eye. The result is the inability to see clearly from 1 eye. The other eye may remain unaffected. Some forms of unilateral loss are curable or treatable. Hearing aids and glasses may increase the ability of the eye to see or the ear to hear. This is not always the case. In such instances, an affected adult or child may need to apply for disability benefits. Because of the singular nature of the problem, this may represent a challenge to the applicant. The medical issue may not be covered in the Blue Book. The health issue may also be regarded as simply not severe in nature. In this instance, the applicant should consult an experience disability lawyer.