My elder kid is 5.5years old. Recently in eye check up we found that she got cylindrical -3 power in both the eyes. she is not a gadget addict. But still how did she got it? when I googled it says may be from birth, is it so? what's the reason for it ? is wearing glasses is the only cure? any ways to avoid glasses? can it be improved by some food? much worried since she doesn't want to wear glasses at all.