How does the eye know when the image is in focus? There is distance measuring device, only light entering the eye. No outer feedback to be sure that focus is in fact focus not something the eye think is focus.

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Thank you all for your respons and upvotes.

I can now see and focus on the answer of my question 🙂

In: 3993

Answer 1

Actually yeah! It’s pretty cool. Babies instinctually recognize human faces, and prefer those similar to their mother. Another neat thing is that babies will naturally make expressions, regardless if they have seen those expressions. By that, I mean even babies blind from birth will eventually smile when happy, frown when sad, and go wide-eyed when surprised or scared.

It’s really neat how much of human behaviour is influenced by evolutionary pushes.