lens iris
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Lens (anatomy) — Crystalline lens (anatomy) Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens … Wikipedia
Iris (anatomy) — Iris The iris is the blue area. The other structures visible are the pupil center and the white sclera surrounding the iris. The overlying cornea is pictured, but not visible, as it is transparent … Wikipedia
Iris dilator muscle — Iris, front view. (Muscle visible but not labeled.) … Wikipedia
Iris sphincter muscle — Iris, front view. (Muscle visible but not labeled.) … Wikipedia
Iris diaphragm — I ris di a*phragm An adjustable diaphragm, reminiscent of the iris of the eye in its action, by which the diameter of an approximately circular opening may be controlled, as for regulating the aperture of a lens; it consists of a number of… … The Collaborative International Dictionary of English
lens´less — lens «lehnz», noun, plural lens|es. 1. a curved piece of glass, or something like glass, that will bring closer together or send wider apart the rays of light passing through it. The lens of a camera forms images. The lenses of a telescope make… … Useful english dictionary
iris bombe — iris bom·bé .bäm bā n a condition in which the iris is bowed forward by an accumulation of fluid between the iris and the lens * * * an abnormal condition of the eye in which the iris bulges forward towards the cornea. It is due to pressure from… … Medical dictionary
lens — [lenz] n. [L, lentil: from the resemblance to the shape of a lentil] 1. a) a piece of glass, or other transparent substance, with two curved surfaces, or one plane and one curved, regularly bringing together or spreading rays of light passing… … English World dictionary
iris diaphragm — n an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usu. to regulate the aperture of a lens (as in a microscope) … Medical dictionary
lens — ► NOUN 1) a piece of transparent material with one or both sides curved for concentrating or dispersing light rays. 2) the light gathering device of a camera, containing a group of compound lenses. 3) Anatomy the transparent elastic structure… … English terms dictionary
Iris recognition — Infobox Anatomy Name = Iris Latin = Caption = The iris is the green/grey/brown area. The other structures visible are the pupil in the centre and the white sclera surrounding the iris. The overlying cornea is pictured, but not visible, as it is… … Wikipedia
