Final answer:
Pingueculae are more often found medially due to increased exposure to environmental factors like dust and UV light, less protective shading from the nose, slower blink rate, and reduced tear film coverage on the medial side of the eye.
Step-by-step explanation:
The question 'Why are pingueculae more often found medially?' pertains to a condition related to the eye. Pingueculae are non-cancerous growths on the conjunctiva, the clear covering over the white part of the eye. They are most commonly found on the side of the eye closest to the nose, which is called the medial side. This occurrence is thought to be because this area is more exposed to environmental factors like wind, dust, and ultraviolet (UV) light due to the anatomical positioning of the nose which provides some degree of shade and blockage to the lateral aspect of the conjunctiva. Also, the medial side of the eye tends to experience a slower blink rate and less tear film coverage, increasing exposure to irritants and causing more damage in that region over time.