It's been 5 days since i had lasik .i stopped smoking weed 15 days before the surgery .can i resume smoking weed from 6th day after lasik ?

No: A visit to the doctor can help, especially if the doctor knows of successful rehab centers or addiction-medicine specialists, both of which may be helpful to a marijuana user wanting to go cold turkey (stop all use at once). For users with good planning skills and willpower, they can cut out a portion of their use (such as 1/3 or 1/2) every couple of weeks or so, and eventually get to zero use.

Weed: You already stopped smoking "weed" for 15 days. How about just stopping this bad habit. If you need help see an addictionologist or go to a treatment facility.