I had glasses for nearsightedness from age 4. I got contacts at age 15. At age 29 I went to the doctor for the first time complaining of eye strain after reading a lot. Now, I usually wear contacts all the time, and then add reading glasses when I need them. One good thing is that since I've been using reading glasses, my nearsightedness has actually improved slightly. The doctor told me that it's because I have less eye strain, so my eyes have to do less adjustment between near and far sight.