May I suggest that anyone with sensitive eyes get full information before they have a corneal cell transplant?
Arthur had one last year. They place a small amount of corneal cells behind your cornea. Then they put a bubble of sterile air in your eye to hold the transplant in place while it bonds, not too much grief. However, it didn't bond well enough. He had to go back for 3 additional bonding procedures. For these procedures he had to be on his back while staring into a 100 watt bulb, while the doctor inserts a needle into the eye as many times as it takes to get the air bubble positioned correctly. Then you're on your back for 60 minutes to see if everything went okay. Except that PA can't stand bright lights, anything near his eyes and has a bad back and can't be on it for more than 15 minutes before it hurts him.
Needless to say this was a period of great anxiety, stress and general mayhem in the household.