Certified Ophthalmic Assistant Practice Exam

Using an ear syringe to clean dust from engorged lenses in a phoropter is not the optimal choice, as ear syringes are designed for a specific purpose in medical scenarios and may not effectively or safely remove dust without risking damage to the lenses. The best method would typically involve a gentler approach.

A soft brush is ideal for cleaning delicate surfaces like lenses. It allows for a gentle sweep that effectively dislodges dust particles without scratching or damaging the lens coatings. Using a soft brush maintains the integrity of the optical components and ensures they remain clear for accurate patient assessments.

Compressed air could potentially be a suitable method in some contexts; however, it might not always remove the dust effectively and could lead to the deposition of moisture or particles if not used correctly. Therefore, while other methods may seem practical, using a soft brush is specifically effective and safe for maintaining the cleanliness of lenses in a phoropter.