Macula lutea of the retina lies from the optic disc at a distance of:
## **Core Concept**
The macula lutea, or simply macula, is an oval-shaped highly pigmented yellow spot near the center of the retina of the human eye and other eyes of the primate order. It is approximately 5 mm in diameter and is responsible for high-acuity vision.
## **Why the Correct Answer is Right**
The macula lutea is located at the back of the eye, specifically in the posterior pole of the retina. It is situated about 2.5 to 3 millimeters away from the optic disc temporally, which corresponds to the nasal side of the visual field. This specific location allows the macula to be responsible for central, high-resolution, color vision.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option suggests a distance that is not consistent with the anatomical location of the macula lutea relative to the optic disc.
- **Option B:** Similarly, this option does not accurately represent the known distance between the macula lutea and the optic disc.
- **Option D:** This option also does not correctly reflect the anatomical relationship between the macula lutea and the optic disc.
## **Clinical Pearl / High-Yield Fact**
A key clinical point to remember is that the macula lutea is responsible for central vision, and damage to this area, such as in macular degeneration, can lead to loss of central vision. The specific location of the macula, approximately 2.5 to 3 mm from the optic disc, is critical for understanding the visual pathway and diagnosing retinal diseases.
## **Correct Answer:** .