Does staring at the sun cause significant, permanent harm?
As a child I was told to never look directly at the sun because it can make you blind.
- I have never heard of cases where somebody got blind this way.
- Often enough I have looked into the sun myself directly without noticeable consequences.
I am aware that an injury of blindness does not hurt and that blindness will only start in a little spot of the eye as the light is focuses on the retina.
My thoughts: Unlike a laser beam, the light of the sun which reaches the eye is not coherent and not as powerful.