Well, generally speaking, I think you can have reading after one week. As we know that the first week is the most essential week which can affect the vision recovery of your eyes. So just be patient. And also, you should know that it is can be dangerous if you use your eyes which have been made surgery, it can hurt them, for your eyes are sensitive and fragile. And when you read book, you have to focus your eyes on the point for a long time. Then it can lead to eye strains. In some serious cases, it can cause dry eyes, or pink eyes. Anyway, you are not supposed to do that. Besides, you should not do exercises like jumping, running which can lead to serious result. Just be careful about your eyes. Having a good rest is effective for your eyes.