DD5 wears glasses and recently went to have her eye's checked. The eye doctor asked "does she know her letter's" a little bit of a laugh and "yes" So she started testing my daughter on 4 different lines she went over each about 3 or 4 times. I could see what my daughter was doing (she thinks everything has to be learned) she had the lines memorized and was saying the letters with no problem. The eye doctor said "Wow your eyes have really improved" smile