Fig. 7.3 Focusing light from (a) distant object and (b) close object. (Sources of images and videos below. Used with permission.)




“Accommodation and natural lens”

Simple clear video but with no audio, only a written explanation.


“Computer-animated model of accommodation”

Complicated terminology, but good simple visuals in the video


“The Near Response of the Eye and Presbyopia, Animation.”

A good video showing the three changes for near vision – convergence, constriction and accommodation – also explains presbyopia



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Sources of images and videos. Used with permission.

Description           English: Accommodation of the human eye: (a) far point (b) near point

Date                      23 October 2019

Source                  Own work, uses and

Author                  MikeRun

Other versions       improved version of


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