the inner circle of an oscillated color spot.
Rainbow or irrediscent effect coating on opaque glass. See "AB"
Colored portion of the eye that expands or contracts to control the size of the pupil.
the donut-shaped band of muscles behind the cornea that gives the eye its color and controls the size of the pupil. (156)
A mechanism within the lens that controls the amount of light that will pass through.
structure that regulates the amount of light entering the pupil by changing shapes.
The contractile diaphragm located in the fluid in front of the lens of the eye and is perforated by the eye pupil.
the opaque muscular contractile diaphragm that is suspended in the aqueous humor in front of the lens of the eye; perforated by the pupil and continuous peripherally with the ciliary body; possesses a deeply pigmented posterior surface, which excludes the passage of light except through the pupil, and a colored anterior surface which determines the color of the eye
Adjustable lens-opening mechanism. Also called lens diaphragm.
The mechanism that can be adjusted to vary the amount of light falling on the imaging device.
The colored part of the eye that can expand or contract to allow the right amount of light to enter the eye.
L. = a rainbow; the coloured membrane around the pupil in anterior segment of eye; a diaphragm in a microscope that can open or close a central pupil-like aperture.
the colored ring of tissue behind the cornea and in front of the lens. The iris regulates the amount of light passing by changing the size of the pupil.
the visible colored part of the eye
The colored circular portion of the eyeball.
An adjustable aperture built into a camera lens that permits control of the amount of light passing through the lens.
the colored portion of the eye that opens and closes to control the size of its circular opening, the pupil.
This is the part of the eye which gives it color. It contains muscles which open or close the pupil in response to the brightness of surrounding light. A blue iris actually has a lack of pigment.
Variable aperture (opening of lens).
A pigmented, muscular ring that surrounds and controls the size of the pupil. In dim light, the pupil is enlarged to allow more light into the eye. In bright light, the pupil is contracted to allow less light into the eye. Both actions are automatic, regulated by the reflex centers in the brain stem and spinal cord.
Circular smooth muscle that forms the pupil of the eye; neurally controlled diameter of aperture adjusts light falling on retina.
(also known as a diaphragm) an adjustable opening situated within a camera lens, which controls the amount of light reaching the film or image sensor of a video camera. Measured in or stops.
The mechanism within a lens that is adjusted to vary the amount of light falling upon the imaging device. If this is an Auto Iris lens for example, then the mechanism would close when it is very bright, and open as it becomes darker, to give a good usable picture.
The circular, pigmented structure located behind the cornea; by expanding or contracting its central opening, or pupil, it regulates the amount of light penetrating the inner reaches of the eye.
A rainbow display of iridescent colors.
The colored circle of the tissue that controls the amount of light entering the pupil by enlarging or reducing the size of the aperture (called the pupil).
A contractile structure, made up of smooth muscle, that forms the colored portion of the eye.
goddess of the rainbow, daughter of Thaumas and Electra, sister of the harpies; messenger of the gods.
The section of the lens adjusted to control how much light passes through it and onto the CCD chip is called an iris.
Coloured disc at the front of the eyeball. Can develop a malignant melanoma in very rare cases.
the pigmented, muscular curtain at the front of the eye, perforated by an opening called the pupil. The muscles of the iris control the size of the pupil, determining how much light reaches the sensory tissue of the retina.
Adjustable diaphragm controlling amount of light trasmitted by a lens.
Adjustable opening in the lens of a camcorder used to regulate how much light reaches the CCD image sensor.
Muscle that controls the amount of light that enters the eye. It is found between the cornea and the lens.
Lens mechanism. Regulates light amounts that are passed through it.
Ring-shaped muscle that controls the size of the pupil and the amount of light that enters the eye.
(eye´ ris) [Gr. iris: rainbow] • The round, pigmented membrane that surrounds the pupil of the eye and adjusts its aperture to regulate the amount of light entering the eye.
Strictly, iris diaphragm. Device consisting of thin overlapping metal leaves pivoting outwards to form a circular opening of variable size to control light transmission through a lens.
Used in profile luminaires for adjusting the circular beam size.
A part of the lens that can be adjusted to change the amount of light passing through it and falling on the CCD chip
The structure in the eye that changes its size to adjust the amount
Acronym for Intelligent Room Illumination Sensor–Automatically detects light volume emitted in a room and color density, then automatically adjusts the mid-range color tones required for optimum color reproduction under any lighting conditions.- 1920 x 1080 pixels progressive
the colored portion of the eye. It can dilate or constrict to change the size of the pupil and control the amount of light entering the interior of the eye.
The colored structure which rests behind the cornea and in front of the natural lens, expanding or contracting to allow the right amount of light to enter the eye.
The coloured tissue behind the cornea. It is usually brown in Asians and blue in Caucasians. It controls the amount of light entering the eye. The pupil is the opening in the iris. By regulating the size of the pupil, the iris controls the amount of light entering the eye.
Improving Regulation In Scotland
muscular diaphragm that controls the size of the pupil; it forms the colored portion of the eye
a graceful, stunning splash of color that stirs the soul
Adjustable opening in a lens that allows light to pass through onto a pickup device. Also called aperture.
The video camera's lens opening which regulates the amount of light entering a camera.
Adjustable lens opening that the allows light to pass through, also called lens diaphragm.
the circular colored membrane behind the cornea, perforated by the pupil. The muscles of the iris regulates the amount of light admitted into the eye by opening and closing the pupil.
The coloured muscular membrane which lies behind the cornea and in front of the lens which by opening or closing determines the size of the pupil and hence the amount of light entering the eye.
The colored portion of the eye, the iris regulates the opening of the pup il.
Synonymous with aperture. The iris is the physical mechanism that can be opened or closed to change the size of the aperture. “Irising down” for example, means to close down the iris (go to a higher f-stop).
The coloured tissue surrounding the pupil
the ring of muscle fibers behind the cornea that determine eye color. The iris opens and closes the hole at its center — the pupil — to control the amount of light entering the eye.
the disk of pigmented muscle tissue located in the anterior chamber behind the cornea and anterior to the lens, the center of which is the pupil
The pigmented tissue inside the eye that gives color to the eye (e.g., "blue eyes", "brown eyes", etc.). The iris controls the amount of light entering the eye by varying the size of the pupillary opening.
A very delicate tissue located inside the eye behind the cornea and in front of the lens, which determines eye color. Signals from the brain prompt the iris to contract or dilate to control the amount of light reflected from an object that enters the eye. The iris dilates in low light and contracts in bright light.
coloured tissue encircling the pupil
Ring of tissue surrounding and behind the eye, the iris creates the eyeï¿1/2s color.
A colored membrane which is set between the lens and cornea. It controls the pupil and allows the correct amount of light into the eye, so that vision is comfortable.
IRIS® stands for Intelligent Room Illumination Sensor, IRIS gives you the confidence that presentations will be seen clearly by your audience in a variety of room lighting conditions. The sensor automatically detects the level of ambient lighting present in the room, and adjust the contrast and brightness of the projector to give its optimal display.
The pigmented portion of the eye.
colored circular membrane that is in front of the lens and controls the size of the opening at its center (pupil), thereby regulating the amount of light entering the eye
is the device behind a camera lens that controls the amount of light admitted, and thus controls brightness of images.
surrounds the pupil of the eye. It expands and contracts to change the size of the pupil and control the amount of light entering the eye.
retractible circular membrane of the eyes. The iris gives the particular color of everyone's eyes. It is orangey-red in the Marans.
The part of an animal's eye that is pigmented, surrounding the dark pupil. It is made up of muscle fibers that control the size of the pupil and thus the amount of light allowed to enter the eye. The iris of Purple Martins is dark brown.
An adjustment that allows you to control the amount of light that reaches the image sensor, as needed.
Pigmented tissue lying behind the cornea that gives color to the eye (e.g., blue eyes) and controls amount of light entering the eye by varying the size of the pupillary opening.
The pigmented tissue behind the cornea color to the eye (blue, brown, hazel, etc.) and controls the amount of light entering the eye by varying the size of the pupillary opening.
The doughnut shaped colored part of the eye. The iris regulates the amount of light entering the eye.
The colored portion of the eye, surrounding the pupil.
The part of the eye that surrounds the pupil and gives the eye its color. The iris controls the amount of light that reaches the retina.
The iris controls the amount of light entering into the eye and is the part of the eye that gives it color (i.e., blue, green, brown).
An aperture in camera lenses which controls the amount of light passing through the lens to reach the imager. The iris is required to compensate for changing lighting conditions.
A means of controlling the size of a lens aperture and therefore the amount of light passing through the lens.
the pigmented tissue behind the cornea which gives eye color and dilates and contracts to control pupil size.
This structure gives the eye its color. The iris has a function similar to the iris of a camera. It is capable of adjusting the size of its opening (the pupil) to allow for varying brightness levels.
gives eye the color it has
The colored part of the eye; suspended behind the cornea and immediately in front of the lens
The colored part of the eye. It is a circular disk that dilates and constricts, thereby controlling the amount of light entering the eye through its central opening, the pupil.
The colored diaphragm of the eyeball with a dilating pupil. It makes up the whole character of the eye.
A colored circular muscle that gives us the color of our eyes. It is responsible for controlling the amount of light that gets into the eye.
Opening in the lens which controls the amount of light that passes through the camera to expose the film. Measured in "f-stops."
The pigmented tissue, it gives color to the eye. Controlled by muscles that alter size of pupil to control amount of light that enters the eye.
The colored part of the eye. The iris is elastic pigmented tissue in front of the lens that regulates the amount of light that enters the eye. The opening in the center of the iris is the pupil. The iris contains muscles that open or close the pupil in response to the brightness of surrounding light. The iris acts like a camera shutter and controls the amount of light that enters the eye.
A transluscent glossy finish that adds a metallic rainbow effect.
The colored part of the eye surrounding the pupil which controls the amount of light that enters the eye.
A pigmented membrane that lies between the cornea and the lens; it acts as a diaphragm to widen or narrow the opening called the pupil, thereby controlling the amount of light that enters the eye.
An adjustable diaphragm that controls the amount of light passing through a lens.
A device used to alter the size of the beam of light, usually with an aperture near the gate of the fixture.
The adjustable opening (mechanical diaphragm) through which light can pass and be regulated.
The coloured diaphragm in the anterior chamber of the eyeball which contracts and expands to adjust for light intensity
A set of small movable plates arranged in a circle around the lens of a camera or lighting instrument which can be shifted to adjust the size of the opening (or aperture), controlling the amount of light which can pass through.
The tissue behind the cornea that gives color to the eye (blue, brown, hazel, etc.). It controls the amount of light that reaches the retina, and the depth of focus of the eye, by varying the size of the pupil.
The colored ring of tissue suspended behind the cornea and immediately in front of the lens; regulates the amount of light entering the eye by adjusting the size of the pupil.
The colored part of the eye. It is an elastic, pigmented, muscular tissue in front of the crystalline lens that regulates the amount of light that enters the eye by adjusting the size of the pupil in the center.
A circular diaphragm that contains the muscles which alter the amount of light that enters the eye by dilating or constricting the pupil. It has an opening in its center.
A part of the eye that separates the space between the lens and the cornea into an anterior and posterior chamber. It is a circular disk, capable of contracting and perforated by a circular pupil. It serves to limit or maximize the amount of light entering the eye. Until the fetus reaches about week 28, the two chambers are separated by the membrana pupilaris. Subsequently and into all adult life the two chambers communicate through the pupil. Dark pigment cells under the translucent tissue of the iris are arranged to produce different eye colors. In blue eyes, the pigment cells only appear on the posterior surface of the iris. In gray, brown and black eyes, the pigment cells appear in the anterior epithelium and the stroma.
colored ring of tissue suspended behind the cornea and immediately in front of the lens separating the anterior chamber from the posterior chamber.
The “color” of our eyes. The iris responds to changing amounts of light by altering pupil size (bigger in less light, smaller in more light).
(I-rihs) A part of the vascular tunic of the eye. It is located on the anterior side of the eyeball and is composed of smooth muscle fibers that regulate the amount of light entering the eye. The iris is the colored part of the eye surrounding the pupil.
colored part of the eye that contains the muscles that adjust the size of the pupil to control the amount of light entering the eye
The colored ring just behind the cornea and in front of the lens that controls the amount of light sent to the retina.
the colored ring of tissue suspended behind the cornea and immediately in front of the lens. Keratectomy the surgical removal of corneal tissue.
The iris controls the amount of light entering the eye. Back to top of the page
Device inside a lens which opens and closes as light conditions change which adjusts the amount of light passed
The colored part of the eye surrounding the pupil. It changes in size as a function of the amount of light.
the colored part of the eye visible through the cornea. The iris can sometimes be thinned in areas to allow more light to shine through as in the correction of transillumination defects in pigmentary glaucoma.
The iris is the colored part of the eye, equal to the human iris, located around the pupil. The iris does not play a role in actual vision.
Similar to your eye, the adjustable opening in the lens that allows light to pass through. The measurement for the iris opening is F-stop.
the colored portion of the eye that regulates the amount of light entering the eye by changing the size of the pupil.
the colored part of the eye that opens and closes the pupil, regulating the amount of light entering the eye.
The coloured part of they eye. Makes the size of the pupil change sizes, depending on the amount of light it lets in.(empty)(empty)
A device commonly used in an ERS or followspot to reduce the apparent diameter of the beam of light. Many automated fixtures also employ a motor controlled iris which can be used to remotely adjust the beam diameter. See Also: Automated Fixture Ellipsoidal Reflector Spotlight Followspot
The colored membrane of the eye, surrounding the pupil. The iris controls the amount of light entering the pupil by expanding and contracting.
This is the colored part of the eye, which lies just in front of the lens and just behind the aqueous humor. It adjusts the diameter of the pupil in response to light.
The circular pigmented membrane that lies behind the cornea of the human eye.
the colored ring of tissue suspended behind the cornea and immediately in front of the lens. !-- google_ad_client = "pub-9798907030361505"; google_ad_width = 336; google_ad_height = 280; google_ad_format = "336x280_as"; google_ad_type = "text"; google_ad_channel ="5148893377"; google_color_border = "FFFFFF"; google_color_bg = "FFFFFF"; google_color_link = "00CC00"; google_color_url = "000000"; google_color_text = "000000";
is a part of a lens that can be adjusted to vary the amount of light passing through the lens and falling on the CCD chip.
The normally white colored part visible in the eyes of Budgerigars, which closes in and opens out around the pupil.
The smooth circular muscle in the eye that surrounds the pupil and contracts or dilates under reflex control in order to govern the amount of light entering.
This mechanical device that adjusts to vary the amount of light passing through the lens of a camera.
The round, colored membrane of the eye surrounding the pupil; serves to control the amount of light reaching the retina.
Colored, pimented tissue behind the cornea. It acts as a muscular diaphragm to regulate the about of light entering the eye through the pupil. ( iris, n.m)
The colored membrane surrounding the pupil of the eye.
The colored part of the eye with a hole (pupil) in the center. It regulates the amount of light entering the eye – the dimmer the lighting, the more light the iris lets into the eye by widening the pupil.
Diaphragm in camcorder's lens that creates an opening or aperture, regulating amount of light entering camera. Size measured in f-stops. [See f-stop.
A device used with a profile lantern to vary the size of the beam
Muscles of eye that control the size of the pupil. Gives color to the eye.
The contractile circular diaphragm forming the coloured portion of the eye and containing a circular opening (the pupil) in its centre.
The opening in the lens that regulates the amount of light entering the camera.
The iris is the round membrane surrounding the pupil of the eye. The muscles of the iris adjust the size of the pupil to regulate the amount of light entering the eye.
Diaphragm that controls the size of the pupil (an opening that lets light in). Many people believe the iris is the colored part of the eye. Actually, that is the choroid, a pigmented layer beneath the sclera (white of the eye).
The colored portion of the ye lying just behind the cornea. The iris is donut-shaped with its hollow center forming the pupil, through which light passes to the lens and the retina of the eye. In bright light, the iris contracts to allow in a lesser amount of light; in dim light, the iris expands to allow in a greater amount of light. The color of the iris is determined by the amount and distribution of pigment within it. Lens A clear, elastic, and convex disk which, along with the cornea, gives the eye its ability to focus. Its proper name is the crystalline lens, which is used to distinguish it from the cornea. The lens lies just behind the iris with its outer rim attached to the ciliary body by thin ligaments. The muscles of the ciliary body enable the elastic lens to expand and contract to keep objects at varying distances in focus. When the lens grows cloudy, whether from age, trauma, disease, or other causes, the condition is called a cataract. A severe cataract may require the lens of the eye to be removed and replaced with an intraocular lens.
The colored part of the eye. In the middle of the iris is a black opening called the pupil. Muscles attached to the iris can make the pupil larger or smaller.
A mechanical diaphragm which can be controlled manually or automatically to adjust the lens aperture.
An adjustable aperture built into a camera lens to permit control of the amount of light passing through the lens.
Opening in the lens that acts like the pupil of your eye. It allows the light to pass on to the pickup device. To get the right amount of light for a good picture, what's called a good exposure, the aperture must be adjusted properly. Without an aperture the camcorder would give you a "washed out" picture in bright light, and a picture with no contrast in dark light.
The colored ring of tissue suspended behind the cornea and immediately in front of the lens. Expands and contracts to adjust the size of the pupil, allowing the correct amount of light to enter the eye.
The iris (on some lenses) controls how much light is let into the camera lens. more
An adjustable opto-mechanical aperture built into a camera that controls the amount of lights coming through the lens.
The colored part of the eye; the iris controls the amount of light that passes through the pupil.
A series of adjustable metal plates arranged to provide a variable circular aperture, used in spot luminaires to alter the size of the beam.
The colored part of the eye located behind the cornea.
Inside the anterior chamber is the iris. This is the part of the eye which is responsible for one's eye color. It acts like the diaphragm of a camera, dilating and constricting the pupil to allow more or less light into the eye.
the colored, circular part of the eye in front of the lens. It controls the size of the pupil.
Circular, colored portion of the eye. Its opening forms the pupil. The iris helps regulate the amount of light that enters the eye.
The colored doughnut shaped structure visible on the front of the eye; controls the amount of light transmitted to the inside of the eye through its opening, the pupil.
The colored portion of the eye behind the cornea
Colored circular membrane suspended behind the cornea and immediately in front of the lens. The iris regulates the amount of light entering the eye by changing the size of the pupil.
The iris (on some lenses) controls how much light is allowed to pass into the camera lens.
the colored part of the eye; partly responsible for regulating the amount of light permitted to enter the eye.
The colored portion of the eye. The iris controls the size of the pupil (the hole through which light enters the eye).
The coloured portion of the eye. It's a muscle that controls the amount of light entering the pupil.
The iris is the colored portion of the eye. It is similar to the aperature of a camera. The iris regulates the amout of light entering the eye. During dilation, drops increase the size of the pupil so that your Today's Vision doctor can evaluate the health of the eye internally.
In anatomy, the iris (plural irises or irides) is the most visible part of the eye of vertebrates, including humans. The following describes the iris of vertebrates, not the independently evolved iris found in some cephalopods. The word comes from Greek mythology, in which Iris is the anthropromorphized form of the rainbow.