You might have a young kid in glasses if:

1. You can spell “pediatric ophthalmologist” without pausing to looking it up.
2. Your child has a tan line across the bridge of her nose from wearing glasses outside.
   
3. You have multiple glasses repair kits and cleaning cloths around the house.
4. When your doctor asks if your child can name body parts, the first thing you think of is that she can say “glasses.”  It’s only hours later that it occurs to you that glasses aren’t actually a body part.
5. You’ve bent pipe cleaner in a rough approximation of the shape of glasses so that your child’s favorite stuffed animal can also wear glasses.
   
6. You can answer questions such as “how did you know he needed glasses?” or “how do they test babies’ eyesight anyway?” quickly, succinctly, and without thinking twice about it.
7. You know every kids’ book and tv character that wears glasses.
8. You’ve baby-proofed your home, and keep other breakables away from your kid, but you no longer think about the fact that you’re placing breakable equipment worth hundreds of dollars on your child’s face everyday.

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from TeagansMom:

9. You are on a first name basis with every person who works at the optical repair store.
10. You are so used to seeing glasses on your childs face that you’ve accidently put them to bed, in the bath and swimming pool still wearing them.
11. (in relation to #6) if you have to answer the questions “how did you know she needed glasses?” or “how do they test babies’ eyesight anyway?” you just might scream.

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from Motherhood and Potatoes:

12. You’re used to the double takes that people do when walking past you.

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from AmomofElly:

13. You get super excited when your neighbor brings over the hand-me-down Mrs. Potato Head toy they have grown out of and you realize that she comes with glasses!!!!

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from Heidi:

14. You are so used to putting glasses on a child’s head that you accidentally put them on your other child (who does not wear glasses)!

Others?