What can babies see?

Alexis

My 3 month old will be in his bed, I’ll know he’s awake just trying to see if he’ll fall back to sleep on his own. He’ll lay there completely fine for awhile and then out of nowhere start the arms shaking, tensed up scared scream cry. I know babies can see things that we can’t but I have a very strong feeling something not so good is scaring my boy every night☹️ Just seeing if any one else has experienced something like this