Question

What happens to the image distance in the eye when we increase the distance of an object from the eye?

Answer 1

Image formation:

1. If somehow the object in question is far away, the focal length must be long in order for a picture to develop here on the retina. The ciliary muscles relax here, causing the eye lens to narrow. As the focal length grows, the picture on the retina becomes perfectly formed.
2. Consequently, when near lying objects are detected, the ciliary muscles contract, broadening the lens. This results in a shorter focal length for optimal picture generation.
3. Even when an item is moved away from the eye, a picture is produced on the retina. As the object moves away from the eye, the lens grows smaller as well as its focal length rises.