Human eye and Lens (anatomy)

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Difference between Human eye and Lens (anatomy)

Human eye vs. Lens (anatomy)

The human eye is an organ which reacts to light and pressure. The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.

Aqueous humour

The aqueous humour is a transparent, watery fluid similar to plasma, but containing low protein concentrations.

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Cataract

A cataract is a clouding of the lens in the eye which leads to a decrease in vision.

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Cataract surgery

Cataract surgery is the removal of the natural lens of the eye (also called "crystalline lens") that has developed an opacification, which is referred to as a cataract.

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Ciliary muscle

The ciliary muscle is a ring of smooth muscleSchachar, Ronald A. (2012). "Anatomy and Physiology." (Chapter 4). in the eye's middle layer (vascular layer) that controls accommodation for viewing objects at varying distances and regulates the flow of aqueous humour into Schlemm's canal. It changes the shape of the lens within the eye, not the size of the pupil which is carried out by the sphincter pupillae muscle and dilator pupillae.

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Cornea

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber.

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Eye

Eyes are organs of the visual system.

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Hyaloid canal

Hyaloid canal (Cloquet's canal and Stilling's canal) is a small transparent canal running through the vitreous body from the optic nerve disc to the lens.

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Iris (anatomy)

In humans and most mammals and birds, the iris (plural: irides or irises) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.

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Lens (optics)

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

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Light

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

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Presbyopia

Presbyopia is a condition associated with the aging of the eye that results in progressively worsening ability to focus clearly on close objects.

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Retina

The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

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Visual perception

Visual perception is the ability to interpret the surrounding environment using light in the visible spectrum reflected by the objects in the environment.

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Vitreous body

The vitreous body is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.

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Zonule of Zinn

The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye.

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