My son got glasses 4 months before his 5th birthday. Neither my husband nor myself have any vision problems, so we had no idea he had any problems. We were shocked when we took him in and the told us how bad his eyes were (+8 now +8.5). At first we were kind of upset about it (how would he look in glasses?, would other kids make fun of him?, etc), but once he got his new glasses, we found out what a blessing the "diagnosis" was. It definitely helped him to be more out going, helped him to focus on his work at school,(before that he was often in his "own little world") and helped with him with his penmanship. Since his eyes are really bad, we have never had a problem with him taking them off. We even let him sleep in them now so he can see during the night/ when we wakes up.
As far as the "bendable/twisty" glasses go, I would not recommend them for a child your daughter's age. We have some for my son now (his primary pair) and they drive us crazy! His glasses have to be bent around his ears for two reasons: 1 so they will stay on better, and 2 because the frames are too long and his glasses slide down his nose. Guess what?? You can't bend bendable glasses around the ears because the bend right back! We've had to go get these glasses professionally adjusted twice, in which they had to cut part of his frames to make them fit better.
We were able to get him 2 pairs of glasses relatively cheap at Eyemasters.
They usually have 2 pairs of kids glasses for around $100 or so. We had never done it, because we get a lot of "upgrades" on his glasses, but I realized the last time we bought glasses we could get a second, basic pair for around $20. We also got him a pair of prescription goggles online at
www.aclens.com. They were less than $40 w/ S&H. We really like them, except for the fact that they are tinted pretty dark.
This has been my longest post (by far), but I would like to add one more thing...kind of a vent. At his last Drs Appt before getting glasses (probably his 4yr old checkup) he was having a lot of trouble identifying the little pictures the Dr was pointing to. Instead of attributing this to a vision problem, she told us we need to discipline him! He wasn't doing anything to be disciplined for.. he was looking at a piece of paper and couldn't see anything, so he didn't respond..... needless to say she wasn't our pediatrician after that!