Iris Eyes

Iris (anatomy)

The iris is a thin, ring-shaped structure in the eye in most mammals and birds that is responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Eye color is defined by the iris.

Eye

An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system.

Iris (color)

Iris is an ambiguous color term, usually referring to shades ranging from blue-violet to violet.

iris

Noun

1. A plant of the genus Iris, common in the northern hemisphere, and generally having attractive blooms (See Iris (plant) on Wikipedia.Wikipedia ).
2. The contractile membrane perforated by the pupil, which adjusts to control the amount of light reaching the retina, and which forms the colored portion of the eye (See Iris (anatomy) on Wikipedia.Wikipedia ).

Verb

1. To open or close in the manner of an iris.
2. To cause (something) to shine with the colours of the rainbow; to make iridescent.

eyes

Noun

1. plural of eye

Verb

1. third-person singular simple present indicative of eye