How do sunglasses benefit eye health?

Sunglasses significantly benefit eye health primarily by protecting against harmful ultraviolet (UV) rays from the sun. Prolonged exposure to UV rays can lead to various eye issues, including cataracts, macular degeneration, and photokeratitis, which is akin to sunburn of the eye. Sunglasses equipped with proper UV protection act as a barrier, reducing the risk of these conditions.

Protective lenses prevent overexposure to UV light, allowing for safer outdoor activities and helping to maintain long-term eye health. This preventive measure is crucial, making it essential to choose sunglasses specifically labeled for UV protection when considering eye care and overall health in sunny conditions. Other options, such as improving focus or eliminating the need for prescription lenses, do not directly relate to the core reason sunglasses are crucial for eye health, which centers on UV ray protection.