Which of the following conditions is not a disqualifying condition for hearing exams?

Temporary earwax blockage is not considered a disqualifying condition for hearing exams because it can often be resolved with simple removal techniques. In many cases, the impact of earwax on hearing is reversible, and once the blockage is addressed, normal hearing can be restored.

In contrast, uncontrolled vertigo, Meniere's disease, and nonfunctioning labyrinth are more severe conditions affecting balance and auditory functions. Uncontrolled vertigo can create significant safety risks, especially in driving or operating machinery, as it can lead to sudden losses of balance or orientation. Meniere's disease is a chronic condition that affects both hearing and balance, often resulting in fluctuating hearing loss, tinnitus, and episodes of vertigo, making it disqualifying for activities requiring precise hearing and balance. A nonfunctioning labyrinth refers to severe dysfunction of the inner ear structures responsible for hearing and balance, which typically indicates a permanent condition that would disqualify an individual from roles that demand these abilities.