Which statement is true regarding the routine maintenance of a phoropter?

Covering a phoropter with a protective dust cover when not in use is essential for maintaining its condition and functionality. Dust and debris can accumulate on the optical components and other intricate parts of a phoropter, potentially affecting its accuracy and performance. A dust cover acts as a barrier against environmental contaminants, helping to extend the life of the instrument and ensuring it remains in good working order for patient examinations.

While storing the phoropter in a cabinet might seem beneficial, it's not as proactive in protecting the device from dust as using a cover. Daily calibration may be necessary depending on the usage and specific practice guidelines, but it is not a routine requirement for the maintenance of a phoropter. Cleaning with alcohol wipes might damage sensitive components; therefore, it's important to use appropriate cleaning methods tailored to the device's materials.