What causes the Whites of eyes to appear dull?

The sclera, often referred to the whites of the eyes, can often have a dull or yellowish appearance due to a number of factors.

- Aging: As individuals age, the sclera can naturally become thinner, and the blood vessels underneath become more visible, leading to a yellowing or dulling effect.

- Dehydration: Insufficient hydration can cause the sclera to become dehydrated and lose its natural elasticity, making it appear dull and less glossy.

- Lack of sleep: Sleep deprivation or chronic fatigue can lead to the appearance dull sclera, due to the dilation of blood vessels in the eye.

- Nutritional Deficiencies: Certain nutrient deficiencies, especially those related to vitamins C and A, can contribute to the appearance of dull sclera.

- Medical Conditions: Some underlying medical condition such as liver or thyroid issues, anemia, and certain medications can affect the appearance of the sclera.

- Sun exposure: Prolonged and unprotected exposure to ultraviolet (UV) radiation can damage the sclera over time, causing it to appear dull or yellow.

- Smoking: Substance use, particularly smoking, can affect the sclera, leading to a dull or yellowish appearance.

- Genetics: Some individuals may have a genetic predisposition to having dull sclera or they may naturally be slightly yellow.

If you notice a sudden or significant change in the appearance of your sclera, it's important to consult an eye doctor to determine the cause and receive appropriate treatment if necessary.