Optical terms and definitions
WebOptical switch: A device that routes an optical signal from one or more input ports to one or more output ports. Optical time domain reflectometer (OTDR): An instruments that used backscattered light to find faults in optical fiber and infer loss. WebDec 6, 2024 · 'Ametr-' means 'out of proportion,' and '-opia' refers to vision or a visual condition or defect of some sort. Ametropia is directly the opposite of emmetropia, the relationship between...
Optical terms and definitions
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Weboptical: [adjective] of or relating to the science of optics. WebOptical Glasses – Eyeglasses with a prescription added to the lenses. Used to improve vision and allow the wearer to see clearly. O. D. – Prescription shorthand for Oculus …
WebA measurement unit that expresses the refractive power of a lens. A lens with a focal length of 1 meter has a refractive power of one diopter. Lenses with shorter focal lengths have greater power in diopters. Accordingly, a lens with a focal length of one-quarter meter has a power of four diopters. WebAnything that's optical has something to do with sight. You could call your glasses an optical aid, since they help you see things more clearly.
Webaxis, optical. Line formed by the coinciding principal axes of a series of optical elements comprising an optical system. It is the line passing through the centers of curvatures of … WebHomeVision CareOptical Terms and Definitions 20-20 Vision- Normal visual acuity. Upper number is the standard distance (20 feet) between an eye being tested and the eye chart; …
WebMay 4, 2015 · In optics, the aperture refers to the size of the objective lens. As the aperture increases, so does image brightness and resolution. Apochromatic: A photographic or refractor lens that uses exotic glasses or two or more lens elements to eliminate chromatic aberration. Apparent magnitude: A measure of the brightness of a star to the naked eye.
WebSep 22, 2024 · SCINTILLATION. A faint, random, sparkling effect throughout the night vision device’s image area. Scintillation is a normal characteristic of the night vision image intensifier and should not be confused with emission points. Scintillation is more pronounced under low light conditions. Also called “video noise.”. importance of nursing schoolWebA loss in clarity of the crystalline lens of the eye, which results in reduced vision or loss of vision. Center, boxing The midpoint of the rectangle that encloses a lens in the boxing … importance of nursing roundsWebThe most familiar type of microscope is the optical, or light, microscope, in which glass lenses are used to form the image. Optical microscopes can be simple, consisting of a single lens, or compound, consisting of several … literary award for science fictionWebDiplopia: Double vision or the seeing of a single object as two. Divergence: Used to describe light rays that are being directed away from each other. Double D Lens: Another term for … literary awards 2020WebEye Conditions and Diseases Browse or search our resources about dozens of eye conditions and diseases. Get the basics about symptoms, diagnosis, and treatments — or … importance of nursing pdfWebEye Terms Eye Conditions Most Common Searches Adult Strabismus Amblyopia Cataract Conjunctivitis Corneal Abrasions Dilating Eye Drops Lazy eye (Defined) Pink eye (Defined) … literary awards for nonfictionWebOur annual Illinois Eye Review is a week-long, learner-centered program providing participants with factual, conceptual and applied courses taught by faculty selected for … literary award shaped like a rocket crossword