Well, in my opinion, it is not possible to be blind, if you sleep with your hair wet. So you should not worry about it. And generally speaking, blindness can be caused by some injuries in your eyes. And macular degeneration and retinal detachment can also lead to blindness. So just be careful about it. By the way, you should not sleep with wet hair, which can be harmful for your head. And in some cases, it can lead to some diseases.
Although it is not possible in most situations, we still could not get rid of this possibility. When you go to sleep with the hair wet, it is not good for your health and makes the blood circulation go so slowly which will be bad for your nerves in the body. Going to sleep with the wet hair will make you have the head headache the next morning when you wake up. You will feel that the head is in unconscious state. However, it may affect your eyes vision too because of the painful head. You'd better make the hair dry before you sleep which will be healthy for your head and eyes.
There are some sayings about sleeping with we hair. The most common and popular sayings about it are this action will lead to cold or bad eye sight, even blindness. Yet it seems that there is no reliable evidence or study about the two theories, which are suggested to be mythical by most sources. So far, there is no direct correlation has been found between sleeping with wet hair and blindness. Yet you need to know it is not good to sleep with wet hair. Sleeping with wet hair will cause buildup of fungus on pillow. We spend one third of our life time on pillow, thus we are exposed to various fungi, which could cause many kinds of respiratory conditions. Fungi could build up on our scalp, which will cause too much dandruff. When I was little, my mother also told me that sleeping with wet hair will make me headache. Anyway sleeping with wet hair is harmful to our health. You 'd better not to do so.
no even DR. TARONGOY himself said The short answer is no. Sleeping with wet hair may ruin your pillows, but it will definitely not make you go blind. Stories of people waking up blind after taking a bath at night are mere coincidences. Good eye care must be based on real evidence. Anecdotes are usually harmless, but may delay proper treatment. Too bad many people forget that there are experienced doctors who can help them separate fact from fiction. The ACES Eye team can make things clearer for you.