"Why do blind people light up when they walk at night?

In fact, the blind man does not light the way for himself, but let passers-by know his existence, let others see the road clearly, and will not pretend to be him. Lighting the road at night is a convenient thing for others and yourself.

Cause of blindness: acute optic neuritis

The reason is nerve inflammation. Some pathological changes in the body, such as sinusitis, tonsillitis, dental caries and otitis media, can cause acute optic neuritis, such as influenza, pneumonia, diabetes and beriberi.

-once optic neuritis occurs, the conduction is affected, leading to blindness. At present, the treatment of acute optic neuritis has a good effect. If you can go to the hospital for treatment in time, your vision can be restored.