I had lasik surgery done about 10 years ago in Delhi. I forget the name of the center but it was in East of Kailash. However, Max Hospital is good. They have many locations. Google and go to their website. E-mail them and you will get prices and time required.
In my case, it took about 2 weeks for all the tests to be completed. It was thorough. The actual surgery took about 15 minutes. It costs me then about $600.00. I guess the price is about the same still. (I saw prices advertised for Rs 40K) (Rs 53=$1)