Question: what is the best supplement to improve eyesight?
Answer: Lutein and zeaxanthin. Lutein and Zeaxanthin are carotenoids. ... 
Zinc. Also found naturally in your eyes, zinc is a powerful antioxidant that protects against cell damage. ... 
Vitamin B1 (thiamine) Vitamin B1 is essential for the health of your eyes. ... 
Omega-3 fatty acids. ... 
Vitamin C.