Lower eyelid and puffiness under eye (only 1 eye)
 

My son is 3 months old. Since birth, one of his eyelids has been noticeably lower than the other. From my understanding (and the Pediatrician), it is not a lazy eye as his vision is not impacted. However, he does have a puffiness under that same eye. It is always there, not just when he wakes up. I should mention that he has had torticollis (twisted neck) which is now almost gone. I just want to be sure there is nothing more concerning about his eye.

Also, does anyone know if there is a way to help him strengthen his eyelid so that it is more symmetrical with the other?

Thanks!