Follow the instructions given you by the hospital exactly.
They should already have given you a prescription of the eye drops you will need to use and told you how often to use them.
The nurse at the dept. will also tell you when you may wash your hair and wear eye makeup again, or go swimming in the public baths.
if there are restrictions on carrying anything heavy she will tell you that too and how long the instructions apply.
It is always best to ask for these details of after-care at the hospital as eye surgery is a field that is developing and changing very fast, so what I was told four years ago may no longer apply.
What bothered me most was that the eye-drops were in a container one was supposed to be able to squeeze, and I found out my fingers just are not strong enough to do so. Forunately, my husband could and did give me the drops, so ask the nurse whether this is a problem with the eye-drops they prescribe. If it is, she should be able to arrange for the district nurse to come in if you cannot manage alone.
It is very important that you use the drops as prescribed.