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Summary
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.
Italiano: Questa immagine mostra come i raggi di luce provenienti da lontano siano deviati dal cristallino stirato per convergere sulla retina, e come i raggi provenienti da una sorgente più vicina siano deviati maggiormente dal cristallino rilassato per convergere sulla retina.
Svenska: Ljus från ett avlägset föremål och ljuset från ett närbeläget föremål bringas i fokus genom att ögonlinsens kurvatur ändras med hjälp av ögats muskler.
This diagram was created with Inkscape, and then manually edited
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Licence, source, credits & technical notes
This diagram was hand-drawn in Inkscape and then tweaked in Notepad by User: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.
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Captions
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Schéma montrant le changement de forme du cristallin (au centre) selon la provenance de la lumière : à gauche, lumière venant de très loin et à droite, lumière venant d'un objet très proche. Dans les 2 cas, la lumière est déviée sur la rétine..