Final answer:
Among the given options, REM deprivation can indeed lead to visual impairments. Lack of REM sleep has been associated with various visual disturbances, such as blurred vision, eye pain, and difficulty focusing.
Step-by-step explanation:
A. REM deprivation only occurs among the elderly.
B. REM deprivation leads to increased amounts of REM sleep on subsequent nights of sleep.
C. REM deprivation can lead to visual impairments.
D. REM deprivation results in long-term mental illness.
Among the given options, option C is correct. REM deprivation can indeed lead to visual impairments. Lack of REM sleep has been associated with various visual disturbances, such as blurred vision, eye pain, and difficulty focusing. It is important to prioritize adequate REM sleep for optimal visual health.