I have a 2.5 years old boy who has recently started staying full day with his grand parents and there were a couple of instances where he refused to open his eyes for hours - this usually happens when we wake him up from bed in the morning or afternoon when he wants to sleep more or sometimes when he cries. Once he is awake and playing around, he can respond normally (even with his eyes closed and we can feel there's movements in his eyes). Besides closing his eyes, he does not have any other unusual symptoms. Except his diet, health is ok, he can still respond normally with his eyes closed, his eyes look ok (no redness or any sort) and when he opens his eyes, he is back to normal again.

This drove us crazy over the past week and were worried too. Our PD says he does not think it's a medical issue but does not know the root cause either.

Pls. advise! Thank you.