some PUN intented
i know why they don't allow pilots who is more than -8D to fly...
pilots who is -8D,
once they accidentally drop their specs or break it in the cockpit..... they can't even see where is their SPECS... or where's the SPare ones.....
and if the CAPT decided to answer nature's call...... who is going to handle all the flight operations for the few secodns or perhaps minutes...
:P