The opening in the center of the iris that enlarges (admitting more light) and reduces (admitting less light). A patient's whose pupils enlarge too much may experience nighttime glare. This is why Dr. Cabler will measure the pupil's enlargement capabilities. Individuals with this condition may still have LASIK, but may experience some nighttime glare because the LASIK treatment zone is smaller than the pupil's enlargement capabilities.
The centre of the coloured part of the eye (iris). It is black. By narrowing and widening, it controls the amount of light entering the eye. At night, the pupil is widely opened, allowing more light to enter the eye. In the bright sun, the pupil constricts and prevents the dazzle of the light affecting us.
The area of the eye that allows light to pass through to the retina of the eye. The Iris controls the size of the pupil by contracting or expanding to regulate the amount of light entering the pupil. The iris functions much like the opening in a camera.
The pupil is the aperture through which light - and hence the images we "see" and "perceive" - enters the eye. This is formed by the iris. As the size of the iris increases (or decreases) the size of the pupil decreases (or increases) correspondingly. ... more about the Pupil
The pupil is the opening in the middle of the iris. It functions like the diaphragm in a camera, controlling the amount of light that enters the eye. The pupil is small in bright light and large in dim light.
The pupil is the â€œblack circleâ€? in your eye. The primary function of the pupil is to control the amount of light entering your eye. When you are in a bright environment, the pupil becomes smaller to allow less light to pass through. When it is dark, the pupil expands to allow more light to reach the back of your eye.
The pupil appears as a small black dot in the center of the iris (the colored part of the eye). The pupil changes its diameter in response to changes in ambient lighting. Operating much like the aperture of a camera, the pupil varies the amount of light reaching the retina and the depth of focus of the eye.
Often compared with the shutter of a camera, the pupil is the black circular hole in the iris that regulates the amount of light entering the eye. The pupil appears black because of the absence of light inside the eye. By using a special instrument called an ophthalmoscope, eye doctors are able to examine the inside of the eye. "Red eye" seen in pictures is due to the camera's flash illuminating the inside of the eye before the pupil can constrict. Go to Top
Often compared with the shutter of a camera, the pupil is the black, circular "hole" in the iris that regulates the amount of light entering the eye. The pupil appears black and the contents beyond it dark because of the absence of light inside the eye, similar to the way a dark room looks when viewed from a lighted one. By using a special instrument called an ophthalmoscope, eye doctors are able to examine the inside of the eye. Go to Top | Close Window
The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils are usually of equal size. If they are not, that is termed anisocoria (from "a-", not + "iso", equal + "kore", pupil = not equal pupils). See the entire definition of Pupil
the opening in the iris which permits entry of light into eye. Through the opening and closing of the iris muscles excessive light is prevented from falling on the retina and damaging it by excess bleaching of the photoreceptors. Within the animal kingdom there are many weird and wonderful variations on pupil shape.
The black, circular opening in the center of the iris. The pupil allows varying amounts of light to pass through the eye. The muscles of the iris control the diameter of the pupil, widening it to allow in more light under dim conditions and narrowing it to restrict light under bright conditions. The pupil appears black only because light enters the eye through it but is not reflected back out.
The pupil is the variable-sized, black circular or slit shapped opening in the center of the iris that regulates the amount of light that enters the eye.Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.
Pupil is a Filipino rock band composed of Eleandre BasiÃ±o BuendÃa a.k.a Ely Buendia on vocals/guitars (from The Eraserheads), Yan Yrastorza Yuzon on lead guitar, Ricardo Nicholas "Bogs" BaÃ±aga Jugo (of Daydream Cycle) on drums and Andrew Ryan Steve Ricafranca Sergio aka Dok Sergio (from the bands Teeth and Daydream Cycle) on bass.
a member of a class or school from the date of entrance at the school and is placed on the current roll until official withdrawal from the class or school because of completion, dismissal, death, transfer, or administrative withdrawal
The map or footprint of the system aperture stop system onto a surface. The pupil represents the collection of all ray paths used by the system to form an image. Obstruction of the pupil will lead to image vignetting.