Still blurry 10 days after lasik, is this normal?

Reading glasses are magnifiers and they will make it easier to see regardless of your prescription. You can certainly use them during the healing process and they will NOT slow down your healing. You have had a large treatment and your vision often will continue to improve for months as the swelling inside your cornea resolves. But it sounds like your spherical equivalent is close to plano so as long as your surgeon has made sure that your eyes are otherwise healthy post-operatively, what you are experiencing sounds normal and your vision should improve significantly.

It is very difficult to answer your question without a good eye exam. There are a number of reasons why you could have blurred vision 10 days after LASIK, though this is not the norm. I suggest you return to your surgeon and explain your issues and have them do another careful eye exam and refraction (or glasses check). Otherwise you may consider getting a second opinion. I hope I could be more helpful but in your case it is very difficult to evaluate without a careful eye exam.