**Core Concept**
Distance direct ophthalmoscopy is a technique used to visualize the fundus of the eye, particularly in pediatric patients or when the media is clear. The correct distance for performing distant direct ophthalmoscopy is essential to obtain an accurate view of the retina.

**Why the Correct Answer is Right**
The correct distance for distant direct ophthalmoscopy is approximately 1 meter. This distance allows the examiner to see the entire retina clearly without the need for lens adjustment. The optics of the direct ophthalmoscope are designed to work best at this distance, providing a magnified view of the retina.

**Why Each Wrong Option is Incorrect**
**Option A:** This distance is incorrect as it is too close, causing the examiner to see only a partial view of the retina.
**Option C:** This distance is incorrect as it is too far, resulting in a diminished view of the retina due to the optics of the direct ophthalmoscope.

**Clinical Pearl / High-Yield Fact**
To perform distant direct ophthalmoscopy, the examiner should stand approximately 1 meter away from the patient, with the direct ophthalmoscope in front of their eye, and the patient's eye at the center of the field of view.

**Correct Answer: C. 1 meter**