optic definition
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- Full Definition of OPTICS. : a science that deals with the genesis and propagation of light, the changes that it undergoes and produces, and other phenomena closely associated with it.ADVERTISEMENT.. : a science that deals with the genesis and propagation of light, the changes that it undergoes and produces, and other phenomena closely associated with it.
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lens noun. 1  a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images. 2  Also called : : compound lens a combination of such lenses for forming images or concentrating a beam of light.3  a device that diverges or converges a beam of electromagnetic radiation, sound, or particles. ( 4 anatomy) See .... a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images. 2  Also called : : compound lens a combination of such lenses for forming images or concentrating a beam of light.
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lens A combination of two or more such pieces, sometimes with other optical devices such as prisms, used to form an image for viewing or photographing. Also called compound lens. 3. A thin piece of glass or plastic, as on a pair of sunglasses, that transmits light without refraction. 4. A device or phenomenon (such as a gravitational field) that causes light or other radiation to converge or diverge by an action analogous to that of a lens.
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Dictionary of Abbreviations for Academic Degrees optometry op·tom·e·try (ŏp-tŏm'ĭ-trē) n. The health care profession concerned with examination, diagnosis, and treatment of the eyes and related structures, and with determination and correction of vision problems using lenses and other optical aids.
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bloomer spectacle-a blunder that makes you look ridiculous; used in the phrase `make a spectacle of' yourself. bull-a serious and ludicrous blunder; he made a bad bull of the assignment.
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Optic neuritis Definition. Optic atrophy can be defined as damage to the optic nerve resulting in a degeneration or destruction of the optic nerve. Optic atrophy may also be referred to as optic nerve head pallor because of the pale appearance of the optic nerve head as seen at the back of the eye.
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spectacle spectacle(Noun) An embarrassing situation. He made a spectacle out of himself. spectacle(Noun) An optical instrument consisting of two lenses set in a light frame, and worn to assist sight, to obviate some defect in the organs of vision, or to shield the eyes from bright light.
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axis optic axis. 1. a line connecting the center of the anterior curvature of the cornea (anterior pole) with that of the posterior curvature of the sclera (posterior pole). 2. the hypothetical straight line passing through the centers of curvature of the front and back surfaces of a simple lens.
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ocular Definition of ocular. 1  1a : done or perceived by the eye ocular inspectionb : based on what has been seen ocular testimony. 2  2a : of or relating to the eye ocular musclesb : resembling an eye in form or function.
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- lens. 1  a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision. 2  a combination of such pieces.
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optic-disc.org The optic nerve head, or disc, is defined as the distal portion of the optic nerve extending from the myelinated portion of nerve that begins just behind the sclera, to the retinal surface. Typically, it is slightly oval with the vertical diameter being about 9% greater than the horizontal.
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- Therefore, if a com-. pany pays a software engineer $90,000 per year, its total costs are at least $180,000. per year or $15,000 per month. Once a project is underway, project managers should regularly update their cost.
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Definitions &Translations An optician is a specialized practitioner who designs, fits and dispenses lenses for the correction of a person's vision. Opticians determine the specifications of various ophthalmic appliances that will give the necessary correction to a person's eyesight.n optician is a specialized practitioner who designs, fits and dispenses lenses for the correction of a person's vision. Opticians determine the specifications of various ophthalmic appliances that will give the necessary correction to a person's eyesight.
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- Lens (optics) For other uses, see Lens. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.
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The Optic Nerve (CN II) and Visual Pathway Anatomical Course. The anatomical course of the optic nerve describes the transmission of special sensory information from the retina of the eye to the primary visual cortex of the brain. It can be divided into extracranial (outside the cranial cavity), and intracranial parts.
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Optical Flow Optic flow defined. The term “optic flow” refers to a visual phenomena that you experience every day. Essentially, optic flow is the apparent visual motion that you experience as you move through the world. Suppose you sitting in a car or a train, and are looking out the window.You see trees, the ground, buildings, etc., appear to move backwards.ptic flow as seen from a bird, insect, or aircraft. The figure above shows what the optic flow might look like from an aircraft flying over a rocky desert (or over Mars!). The blue arrows show the optic flow that would be seen by a camera or a passenger on the aircraft.
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lens lens (lěnz) n. pl. lens·es A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which are curved, by means of which light rays are refracted so that they converge or diverge to form an image.
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optic nerve optic nerve - the cranial nerve that serves the retina. nervus opticus, optic tract, second cranial nerve. visual system - the sensory system for vision. cranial nerve - any of the 12 paired nerves that originate in the brain stem.
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Optic Nerve eye - definition and function Optic Nerve eye-definition and function. Optic Nerve-the second cranial NERVE, which conveys nerve impulses from the EYE to the BRAIN. There are two optic nerves, one from each eye. The fibers that become the optic nerve originate in the occipital lobes of the cerebrum, in an area called the visual cortex.Each extends along structures called the optic tracts that pass through the temporal lobes and the center of the brain, converging in the optic chiasm.t appears as a pale circle, about the size of a pencil eraser, against the dark background of the retina. The retina’s network of nerves extends from the optic nerve, gathering nerve impulses from the rods, cones, and other nerve cells in the retina.
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Medical Definition of Optic nerve The iris is the colored part of the eye that helps regulate the amount of light that enters the eye. The pupil is the dark aperture in the iris that determines how much light is let into the eye. The lens is the transparent structure inside the eye that focuses light rays onto the retina.
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powered Optics. 1  the magnifying capacity of a microscope, telescope, etc., expressed as the ratio of the diameter of the image to the diameter of the object. Compare magnification (def 2). 2  the reciprocal of the focal length of a lens.
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- Medical Definition of optic. 1  1a: of or relating to vision optic phenomenab: dependent chiefly on vision for orientation humans are basically optic animals. 2  2a: of or relating to the eye : ocularb: affecting the eye or an optic structure.
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Lens (optics) Lenses can be used to focus light. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.
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Optic Neuritis What Is Optic Neuritis? The optic nerve carries visual information from your eye to your brain. Optic neuritis (ON) is when your optic nerve becomes inflamed. ON can flare up suddenly from an infection or nerve disease. The inflammation usually causes temporary vision loss that typically happens in only one eye.
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Medical Definition of Optic nerve In sum, the optic nerve is uniquely a part of both the eye and the brain. It is embryologically the brain's envoy to the eye and functionally the eye's envoy to the brain.
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Medical Definition of Optic nerve Optic nerve: The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. These impulses are dispatched through the optic nerve to the brain, which interprets them as images. Using an ophthalmoscope, the head of the optic nerve can be easily seen.