On Jan. 26 my sister had had retinal detachment surgery involving the scleral buckle and also the gas bubble. During that surgery she developed cataracts, and had to go back in Feb. 4 to get them removed. She had to get the lens taken out of her eye and cannot get that fixed until the gas bubble dissolves.

This weekend, she is going out of town to stay with a friend. I fear that she is going to smoke marijuana. I'm not nervous because shes doing it. Can it do anything to her eye? I know she will not listen to me, and I can't find anything on the internet about negative effects. Are there any?