My son who is 23 months (born 10 weeks premature) started to have a lazy eye about 4 months ago. We eventually got an appointment with a pediatric opthalmologist last month. By then his right eye had become more noticeable lazy but his left eye had also started to every now and then seem lazy. He was diagnosed as longsighted on both eyes +2.5 and +3.0 and was prescribed glasses. He has now worn his glasses for two and a half weeks. The first 10 days he seemed very happy to wear them but for the last week he has started to bend his head backwards so that he can look underneath the glasses instead of through them when looking at things at a distance. He is doing this more and more by the day. Can this be a sign of his vision having changed since he saw the opthalmologist or what could it be? Should we go back to have his vision checked up again before his next appointment?