Big Day-Prayers Please

Tomorrow my DH will go for cataract surgery. Normally that is a simple operation and people can see better immediately. Not so for him. He had one removed 10 years ago and developed cystoid macular edema and has never regained the sight in that eye even though numerous retina specialist have tried everything they know to reverse the swelling and nothing helped. Hence, he is extremely nervous and of course I am also. There is a 50-50 chance this will render him totally without sight but also the flip side that this time there will be no complications and he will finally be able to see. The dr has waited this long because he too is scared of what may happen. He has watched him closely for the past several years and told us when it got to the point he could no longer see that it would be time to do the surgery. That day has arrived. He can not make out faces anymore, can't read even with a magnifying glass, cannot really view tv.
Please say a prayer that things go good and he will have vision in this eye.
Thank you and blessings to you.