If you have been cleared to fly by your doctor, I wouldn't worry too much. I flew about 4 weeks after my first retina surgery several years ago, and I will be flying in a month to India (about 8 weeks post surgery this time).
Of course your father should be careful and avoid stress, but its not going to damage the eye or the surgery. Realistically the thing to be careful about is banging your head around -- causing the retina to detach again -- but that really should be a thought all the time, not just after surgery.
Thanks I was wondering about that too. I am suppose to go to Africa about 3 months post gas bubble surgery.
Sharon
Hi I had the gas bubble for 2 months and was infomred that once the bubble had gone flying would not be a problem. I went on 5 different flights from the Uk to India and back recently and had no problems. Hope this helps