crystalline lens

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Related to crystalline lens: lens subluxation

crystalline lens

The lens of the eye in vertebrates and certain invertebrates.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

crystalline lens

(Anatomy) a biconvex transparent elastic structure in the eye situated behind the iris, serving to focus images on the retina
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



n., pl. lens•es.
1. a piece of transparent substance, usu. glass, having two opposite surfaces either both curved or one curved and one plane, used in optical devices for changing the convergence of light rays, as for magnification, or in correcting defects of vision.
2. a combination of such pieces.
3. some analogous device, as for affecting sound waves, electromagnetic radiation, or streams of electrons.
4. a doubly convex, transparent body in the eye, behind the pupil, that focuses incident light on the retina.
5. a body of rock or ore that is thick in the middle and thinner toward the edges, similar in shape to a biconvex lens.
[1685–95; < New Latin; Latin lēns a lentil (a lens so called from its shape); compare lentil]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.crystalline lens - biconvex transparent body situated behind the iris in the eyecrystalline lens - biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function
eye, oculus, optic - the organ of sight
lens cortex, cortex - the tissue that surrounds the lens nucleus
lens capsule - a tenuous mesoblastic membrane surrounding the lens of the eye
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

crys·tal·line lens

n. cristalino, lente del ojo.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
When you're reading, looking at a map or squinting toward the horizon, your eyes adjust themselves involuntarily and instantaneously, thanks to tiny muscles inside the crystalline lens that can bend it and change its shape.
The lens sits behind the iris and in front of the natural crystalline lens (see Figure 2), and is anchored in place by footplates pushing into the junction between the iris and the ciliary body, that is to say, the sulcus.
The researchers tested the prototype device on a group of 56 people, all of them having an eye condition called "presbyopia," which is a condition characterized by the "stiffening of the crystalline lens" of the eyes.
This technology allows the patient to actively focus on objects, just as the natural crystalline lens does in a youthful eye, providing patients with a natural, continuous range of vision.
Heat, or any insult (physical or chemical), would cause exactly similar changes in the crystalline lens inside the eye making it to lose its transparent nature, becoming initially cloudy and then finally white.
A peripheral retinal scan was done to see the crystalline lens. An ideal evaluation could not be performed because the patient had sunken eyes and incomplete pupil dilation.
The crystalline lens in the eye is responsible for focusing.
In addition, in all postoperative visits, the phakic IOL vault (distance between the phakic lens and the crystalline lens) was measured with an anterior segment optical coherence tomography (OCT) device (Visante OCT, Carl Zeiss AG, Germany).
They also highlighted that endotemponade with either gas or silicon oil has almost same effect on CED decrease.13 An intact normal crystalline lens, or a stable iris-artificial lens diaphragm after cataract surgery is protective for corneal endothelium.
In vertebrates the crystalline lens is a biconvex transparent structure, which helps light to focus on the retina.
The process of changing the shape of the crystalline lens to allow for near and far vision is called: