Here's why:
* The sun's rays are incredibly powerful. Even during an eclipse, the sun's rays still contain harmful ultraviolet (UV) and infrared radiation.
* The sun's brightness can overwhelm the eye's natural defenses. The pupils, which normally constrict in bright light, don't have time to react to the intense light of the sun, even during an eclipse.
* Damage to the retina. The intense radiation can burn the retina, the light-sensitive tissue at the back of the eye. This damage can lead to blurry vision, blind spots, and even complete blindness.
It's important to remember that:
* Looking at the sun through sunglasses, binoculars, or telescopes is not safe and can actually magnify the damage.
* The only safe way to view a solar eclipse is through special solar viewing glasses or eclipse viewers. These glasses have filters that block out harmful radiation.
* Never look directly at the sun, even for a few seconds.
If you're experiencing any eye pain or vision problems after viewing a solar eclipse, seek immediate medical attention.
