English: This diagram shows how light from afar is bent by the stretched lens to strike the retina, and how light from a closer source is bent even more sharply by the relaxed lens to strike the retina.

Licence, source, credits & technical notes: This diagram was hand-drawn in Inkscape and then tweaked in Notepad by Erin Silversmith. The right-hand eyeball is a clone of the other, and all the arrows are clones of the top-left one. Both the eyeballs and the lenses have translucent black fills.

The source of information for its creation (aside from general knowledge) was Focus in an eye2.png مِن Fastfission, in turn Own work based on: Focus in an eye.png مِن Theresa Knott و Focus in an eye.png مِن Theresa Knott.

N.B. For crediting purposes, use "Wikimedia Commons", or give the full details supplied on this page. Additionally, you may use this image without restrictions in a non-profit educational environment.