**Core Concept:** The Brushfield spots are small yellow dots located at the level of the anterior chamber angle in the iris stroma, and are visible on slit-lamp examination. They are present in the normal human eye and are a normal finding. The Brushfield spots are named after the ophthalmologist, Sir Kenneth Brushfield, who first described them in 1937.

**Why the Correct Answer is Right:** The correct answer, C, is referring to the presence of Brushfield spots in the iris. These spots represent the accumulation of lipofuscin granules in the RPE (Rod Photoreceptor Endfoot) cells and Bruch's membrane, which is a dense fibrous connective tissue layer between the RPE and the retinal pigment epithelium. The spots are a normal finding in the human eye and can be visualized using a slit-lamp examination, with the help of a +90D lens.

**Why Each Wrong Option is Incorrect:** A) and D) are incorrect because these options refer to other eye conditions or abnormalities, such as choroidal melanin pigment clumps in the retina (option A) and a condition involving the red blood cells in the vitreous body (option D). These are not related to Brushfield spots in the iris.

B) is incorrect as it refers to the presence of lipofuscin in the RPE cells, which is a normal finding and is not a condition or abnormality.

**Clinical Pearl / High-Yield Fact:** The Brushfield spots are important to recognize as they are a normal finding in the human eye and do not indicate any disease process or abnormality. They are an essential part of the slit-lap examination of the eye and help in differentiating them from other abnormalities like choroidal melanin pigment clumps and red blood cell clumps in the vitreous body. This is important for diagnosing various eye conditions accurately and providing appropriate treatment to patients.