Why do we sneeze when our eyes are exposed to sunlight?!
Question: Why do we sneeze when our eyes are exposed to sunlight.?
Answers:
It's called Photic Sneeze Reflex and it occurs in 17% to 25% of humans, with more common occurrences in Caucasians than other human races
Scientifically speaking, over stimulation of the optic nerve in some people trigger the trigeminal nerve (the fifth cranial nerve), which is responsible for sneezing in humans. Additionally, Photic Sneeze Reflex can be brought on by sudden inhalation of cold air or a strong flavor in food such as mint or onion. This implies than almost any nerve close to the trigminal nerve can cause the Photic Sneeze Reflex to occur.
Health Question & Answer
Scientifically speaking, over stimulation of the optic nerve in some people trigger the trigeminal nerve (the fifth cranial nerve), which is responsible for sneezing in humans. Additionally, Photic Sneeze Reflex can be brought on by sudden inhalation of cold air or a strong flavor in food such as mint or onion. This implies than almost any nerve close to the trigminal nerve can cause the Photic Sneeze Reflex to occur.
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