Students especially should know this is the "black hole" in the center of the eye's iris
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Eye Anatomy: How Do Our Eyes Work? - EyeHealthWeb.com  The Sclera is the white outer part of the eye that you can see. ... The pupil is the black hole in the center of the colored iris. .... Did you know  messages are sent from the eye to the brain via the optic nerve at a speed of 423 miles per hour?
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Eye Examination | definition of Eye Examination by Medical dictionary  Looking for online definition of Eye Examination in the Medical Dictionary? ... A child with no symptoms should have an eye exam at age three. ... The examiner needs to know if the patient is taking any medications or has any existing health .... Pupil  The circular opening that looks like a black hole in the middle of the iris.
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Human Medical Physiology: Ocular physiology  Our approach in studying ocular physiology in this course will be by studying the function of each part of .... Pupil is a round black hole in the center of the eye .
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Eye, advice? [Archive] - WetCanvas  There are a few things about eyes that you should know. The eyeball ... The iris is a perfect circle in the center of the eyeball. You're close to...
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Pupil: Light, Perception & Life Science Activity | Exploratorium ...  You can watch the pupil of your eye change size in response to changes in ... your eye, the colored disk of your iris, and your pupil, the black hole in the center of...
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Black Holes & Quasars - Curious About Astronomy? Ask an ...  Jan 17, 2015 ... Radio data shows that the supermassive black hole at the center of ... Astronomers have detected a handful of these in our galaxy, by observing the light emitted when ... gas and dust which lets out its last gasp before being sucked into ... Quasars can be detected out near the edge of the visible universe,...
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Anatomy of the Eye | Red Rover Ventures  The optic nerves from both eyes join together in the brain in a way so that ... Cornea: The cornea is the transparent, dome-shaped window covering the front of the eye. It is a powerful refracting surface, providing 2/3 of the eye's focusing power. ... Retina: The retina is the light-sensitive layer of tissue at the back of the inner...
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Cataract Surgery Basics - All About Vision [Video]  What you should know about cataract surgery, explained by eye surgeon Vance ... eye that has become cloudy is removed and replaced with an artificial lens (called ... For one thing, maybe they could help people who live in areas without .... surgery (dilating your pupil; administering preoperative medication) and for a brief...
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On Pupil Shape [Archive] - Freethought Forum  [Archive] On Pupil Shape The Sciences. ... this is the eye of a tree-climbing, fruit-eating Panay Monitor Lizard. ... Slit-like, vertical pupils can be closed down more efficiently, and as a rule ... If the cat or fox mis-judges the distance, its prey will likely escape. ... But what about cobras, with their round pupils?
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jeopardy/2878_Qs.txt at master  jedoublen/jeopardy  GitHub  Wrong: Value: $800. Number: 9. ANATOMY | The uvula is that fleshy piece at the back of the throat & the uvea is the pigmented middle layer of this organ | eye.
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Anatomy and Structure of the Eye | BrightFocus Foundation  Cornea: The outer, transparent structure at the front of the eye that covers the iris, pupil ... at the back of the eye that carry visual messages from the retina to the brain. Photoreceptors: The light sensing nerve cells (rods and cones) located in the retina. ... Retina: The light sensitive layer of tissue that lines the back of the eye.
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Comparing the Human Eye and a Camera  a diaphragm to control the amount of light that gets through to the lens. This is the shutter in a camera, and the pupil, at the center of the iris, in the human eye.
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Learn about Your Eye and How Vision Works! - Home Science Tools  The outside layer of the eye is made up of the sclera and the cornea. ... When you look at a person's eye, you can see parts from each of the first two layers: the ... When you look at an object that is close by, the ciliary muscles are contracted...
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Anatomy of the Eye  AAPOS  These muscles work to move the eye up and down, side to side, and to rotate the eye. ... Tenon's capsule is a layer of tissue that lies between the surface of the eye ... The cornea occupies the front center part of the outer wall of the eye. ... Muscles in the iris cause the pupil to constrict in bright light and to dilate in dim light.
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Parts of the Eye - RIT Center for Imaging Science  Here I will briefly describe various parts of the eye: Sclera image from http://www.ctlens.co.uk/problems. The sclera is the white of the eye. "Don't shoot until you...
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FAQ's  Ohio Eye Care Consultants  The pupil is the dark circular opening in the center of the iris of the eye which controls ... Eye drops are used to make the pupil larger, so your eye doctor can look ... The dilating drops will make your vision a little blurry and lights seem brighter.
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Fovea centralis - Wikipedia  The fovea centralis is a small, central pit composed of closely packed cones in the eye. It is located in the center of the macula lutea of the retina. The fovea is responsible for sharp central vision (also called foveal vision), ... Histologically the only region of the retina where GCL has >1 layer of ganglion cells; Yellowish...
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L-6 Optics of the eye.  Several specific measurement tasks include: (1) Measurement of the pupil size in ... Most of the refraction occurs at the cornea, because of its curvature, and the large ... the Vitreous humor begins to shrink and pull away from the back of the eyeball. .... In bright light the eye's pupil diameter can be as small as 2 mm, so the...
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Perception Lecture Notes: The Retina - Center for Neural Science  The retina is the most extensively studied piece of the central nervous system. ... certain kinds of vision experiments that require careful control over eye movements. ... from the pigment epithelium, scotoma (blind spot) in the area that detaches.
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2020 On-Site Optometry | GLOSSARY  Dilation: A procedure that enables your eye care professional to view the inside of the eye. Drops placed in each eye widen the pupil, which is the opening in the center of the ... Dry eye is typically caused by either dehydration or medication use, but can ... Iris: A thin, circular structure in the eye, responsible for controlling the...
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Black holes in fiction - Wikipedia  The study of black holes, gravitational sources so massive that even light cannot escape from ... Its prison was a strange artificial star known as the Black Sun, and there it ... hole as an event horizon, extending the commonplace notion that objects .... In a tale that makes innovative use of black holes as an imagined power...