Yeah that’s more an ocular thing… for me the main worry, and what I’ve seen in some children, is a tendency towards ASD signs, lack of language/communication skills, easier addiction/hormone reward cycle… that kind of things. It kinda makes sense because screens are so new and there is nothing like that before, so we are not evolutionally (is that a word?) used to this technology I tried to find but couldn’t get to the exact papers I’ve read, but just a search could give some clues: searx.tiekoetter.com/search?q=neurological+effect…