My wife's flow was always heavy. She said pregnancy wasn't bad. Never got morning sickness or anything like that. She said the worst part about being pregnant was the postpartum depression afterwards.

Keep in mind that this is just one person's experience, and she's only been pregnant once.

That's what happened to my little brother. One of his eyes was "weaker" than the other and his brain mostly gave up with it. Around 10 or 11, the optometrist suggested he wear an eyepatch on his good eye to force his brain to re-engage his bad eye. It mostly worked. Could've helped more, but he wasn't very consistent with it because he obviously had a hard time seeing.