The Iris

Items refer to the human eye unless otherwise specified. This section leans heavily on Wyszecki and Stiles (1982) an excellent book.

• The structure which gives the "color" to the eye.
• The pupil is the hole in the iris.
• Contraction of the iris makes a pupil small.
• Relaxing of the iris makes the pupil large.

Other relevant web sites: Iris images and Iridology

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