A medical assistant should administer which of the following examinations to a patient who has hyperopia?

Correct answer: A
A. Ensure the otoscope is in the room. Ensuring that the otoscope and other necessary equipment are in the room is an important step in preparing the room for a physical examination.
B. Replace the half-full sharps containers. Sharps containers should be replaced when they are three-quarters full, not necessarily when they are half-full. This action, while important, is not specific to preparing for a general physical examination.
C. Obtain preauthorization from insurance. Preauthorization is an administrative task that is not directly related to preparing an examination room.
D. Sterilize counter surfaces in the room. Cleaning and disinfecting counter surfaces is important for infection control but typically would have been done after the last patient. This action is less directly related to preparing for a general physical exam compared to ensuring the necessary equipment is present.

A. Alcohol-based sanitizer: Alcohol-based sanitizers are effective for hand hygiene when there is no visible dirt or grease. They are generally used for routine hand antisepsis in situations where hands are not visibly soiled. For procedures involving body fluids, if hands are visibly soiled, traditional handwashing with soap and water is preferred.
B. Disinfectant scrub: Disinfectant scrubs are generally used for cleaning surfaces and are not appropriate for personal hand hygiene.
C. Antiseptic solution: Antiseptic solutions are used for cleaning skin before injections or procedures, not typically for hand hygiene.
D. Liquid soap: Liquid soap is suitable for handwashing, especially when hands are visibly soiled or after exposure to body fluids. In the context of body fluids, soap and water would be preferable to ensure effective removal of contaminants.