When a patient returns with problems, which question is the least important to ask?

The question regarding whether the patient could have waited until their next appointment is the least important to ask when addressing their current problems. This question does not directly contribute to understanding the patient's immediate needs or concerns regarding their vision or eyewear.

The other questions are more relevant to the patient's eye health and comfort. Inquiring about changes in their prescription is crucial as it may indicate if the current lenses are inadequate for their needs. Asking about eyewear comfort helps to assess whether the patient is experiencing discomfort that could affect their vision or overall satisfaction. Lastly, knowing when the patient last had an eye exam provides insight into their eye health status and whether there may be underlying conditions that need attention. Thus, the emphasis should remain on gathering information that directly pertains to the patient’s current situation rather than questioning the timing of their visit.