The cornea plays a crucial role in our vision. It is the transparent tissue at the front of the eyeball where light enters the eye. Approximately 65% to 75% of the refraction of light occurs in the cornea. The cornea also protects against external threats and harmful UV radiation. However, this vital part of our eye is constantly under siege. The cornea faces oxidative stress daily due to its high exposure to light and intense metabolic activity. The main culprit is ultraviolet radiation from the sun, which triggers the formation of Reactive Oxygen Species (ROS). These harmful free radicals can wreak havoc on the cells if not kept in check by antioxidants. While the cornea absorbs all UVC and most UVB rays, UVA rays are primarily absorbed by the lens.
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