What are UV rays and how to protect our eyes from harmful UV rays

Ultraviolet (UV) Rays

UV rays are a type of invisible light coming from the sun. They have shorter wavelengths than visible light, but longer than X-rays. While some UV rays are beneficial (vitamin D production), overexposure can be harmful.

There are three main types of UV rays:

• UVA: These have the longest wavelengths and penetrate deep into the skin, contributing to wrinkles and premature aging.
• UVB: These have shorter wavelengths and are responsible for sunburn.
• UVC: These are the strongest and most dangerous, but luckily they are almost completely absorbed by the ozone layer.

Protecting Your Eyes from UV Rays

Just like your skin, your eyes need protection from UV rays. Here are some ways to do that:

• Sunglasses: Look for sunglasses that block out 99% of UVA and UVB rays. Wraparound styles offer additional protection from UV rays entering from the sides.
• UV-protective contact lenses: These lenses can provide an extra layer of protection for your eyes.
• Hats: A wide-brimmed hat can help shade your face and eyes from sunlight.
• Limit midday sun: The sun's rays are strongest between 10 am and 4 pm. Try to limit your time outdoors during these peak hours.

By following these tips, you can help protect your eyes from the harmful effects of UV rays and keep them healthy for years to come.