My 4 months old's eyes sometimes misaligned especially when he looks at a very close thing or glances at something. but his eyes can move freely?

Light Reflex?: It is normal for your baby's eyes to " cross" as he is peering at ab object that is going closer in towards his face. This is normal. One key part of his exams at his pediatrician appointment is taking a closer look at where the light bounces off each eye. These should be symmetrical. We call this the " light reflex" and it helps us understand if the baby needs further evaluation