While it has been shown that cannabis can lower the pressure inside your eye, medications to lower the intra-ocular pressure has been shown to be far more effective with few if any side side effects.
After cataract surgery surgery itself, there has been no research that shows cannabis can help or not with recovery. That said, there is the generalized anti-inflammatory effects that a high CBD strain can provide.
However, if you decide to use cannabis I would avoid smoking or vaping since you want to avoid coughing, as well as the smoke that can get into your eyes and cause irritation. Tinctures, capsules or edibles would be the best route. You also should discuss this decision with your physician.
Perry Solomon, MD
I recently had cataract surgery and I did not quit smoking at anytime, before or after, infact 3 hours after. I do believe it affected the procedure itself since my eyes are really not any better. I was afraid to ask the Dr.