Two of my kittens had an eye infection recently and its been treated. Their eyes are bright and wide but one of them has a derpy eye. I looked for other symptoms like tearing, scraching and sneezing But there isn't any, its just that eye and its not swollen at all. What should I do? Is it normal?
Ps: there isnt any discharge just wrong title.

What do you mean a derpy eye ? If there is no sneezing along with the eye infection (which would be ) then I would suspect distemper. Usually eye infections in kittens signify distemper.

When you say the kittens have been treated, do you mean treated by a vet ?

No, it isn't normal but as long as you are bathing their eyes in warm water, cleaning, then I think you are okay but if you want a proper opinion, visit a vet with the kittens. There are no vets on this site.