COMT Practice Exam 2025 – Complete Resource for Exam Prep

Using canned air or a soft camel-hair brush is the best method to clean the mirror on the slit lamp because it effectively removes dust and debris without scratching or damaging the delicate surface of the mirror. The gentle bristles of a camel-hair brush allow for a thorough clean while minimizing the risk of abrasion, which is crucial when dealing with optical components.

Canned air provides a safe and efficient means of blowing away particles that may be stuck on the mirror. This method is particularly advantageous as it avoids any contact that might cause scratching, ensuring the integrity of the optical surface remains intact.

In contrast, using a rough cloth could potentially damage the mirror’s surface due to its abrasive nature. Submerging the mirror in a cleaning solution is also risky; it may lead to water or cleaning solution getting trapped in joints and seals or even affecting the mirror's alignment. Rubbing alcohol, while an effective cleaner for many surfaces, may also be too harsh for the mirror’s coating, leading to degradation or streaking. Thus, using canned air or a soft camel-hair brush is the most appropriate and safest cleaning method for maintaining the integrity of the slit lamp mirror.