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.

Question

Thank you all for your respons and upvotes.

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

In: 3993

Answer 1

You control what your eye is focusing on. If something isn’t sharp you change the focus. You might not realize this, because its so engrained you don’t even think about it. I can control the focus of my eye and make things out of focus if I want to, and I’m sure you can to