I myself started wearing glasses when I was about 18 months old and have worn them ever since. All of our children, and my husband wears glasses. I remember the horror I felt when the pediatric opthamologist recomended that my first son then 6 months old should start wearing glasses. I thought there was no way that I was going to be able to keep them on him. I remember calling my mom for advice just sure there was no way I could keep glasses on a 6 month old. To my surprise I was completely wrong. It seems that as soon as he put them on and saw the world through clear vision he was never going back. He never messed with them from minute one and in fact as a small baby 6-9 months when he got up from naps or in the morning and I was slow in getting them on him he would reach for mine right off my face. Each of my other 6 children started wearing glasses between 3-9 months old and all of them adapted just as easily. Because our prescriptions are so complex our glasses are ussually about 500.00 or more each pair every year! They defineatly have accidents and they get broken and yes we have had several pairs in the the last 11 years break spontaneously. A few words of advice #1 if you can find a pair they like in the "flexon" frames (these are feames that are totally flexable you can crumple them in your hands and they bounce right back) thats great. #2 If you cant find the flexable frames insist on a pair with flexable hinges (the hinges have a little backwards give). #3 Ask you Optometrist if they have breakage protection insurance. and #4 The next time one of yours accidently breaks their glasses just take comfort from my family of 9 that it defineatly could be worse!