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

lens

(lɛnz)

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]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

crystalline lens - biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina

lens of the eye, lens

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

Translations

cristallin

хрусталик

crys·tal·line lens

n. cristalino, lente del ojo.

English-Spanish Medical Dictionary © Farlex 2012

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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.

Researchers create a robotic, eye-controlled lens

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.

FYI on ICLs: surgical options for the extreme Rx: This article considers the indications, assessment, surgical procedure and follow-up of patients undergoing phakic intraocular lens implantation for the management of high refractive error

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.

Alcon acquires PowerVision

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.

Not Yet Time To Say Goodbye To Cataract Surgery

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.

Spontaneous Lens Absorption Initially Misdiagnosed as Crystalline Lens Luxation

The crystalline lens in the eye is responsible for focusing.

You can deny your age-but your eyes don't lie

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).

Early Results with a New Posterior Chamber Phakic Intraocular Lens in Patients with High Myopia

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.

Change in central corneal thickness, corneal endothelial cell density, anterior chamber depth and axial length after repair of rhegmatogenous retinal detachment

In vertebrates the crystalline lens is a biconvex transparent structure, which helps light to focus on the retina.

A Novel Gap Junction Alpha 8 (GJA8) Mutation Associated with a Congenital Cataract Patient in Pakistan

The process of changing the shape of the crystalline lens to allow for near and far vision is called:

Continuing Education Test