Question

what will happen when someone will sneeze while open with his eyes​

Answer 1

Answer:

If you sneeze with your eyes open, your eyeballs will pop out of your head

Answer 2

Eyes will be closed.

Explanation:

When stimulated, the brain stem's sneeze center orders muscle contractions from esophagus to sphincter. That includes the muscles controlling the eyelids. Some sneezers even shed a few tears. Perhaps people close their eyes while sneezing to prevent the expelled particles from entering their eyes.