Hi my two year old seems to squint every once in awhile when watching t.v. this is actually something two family members noticed but no other families who have equal time have noticed. My child's father and I haven't noticed it except when she seems to be concentrating on something. We also wonder if it is something she is doing because someone tried to recently teach her to wink at which time she squinted. Should we worry? She does very good with colors, letters and numbers even at distance and her doctor says her eyes look good and she seems very well advanced for her age. Thank you