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Ophthalmology. In ophthalmology, horror fusionis is a condition in which the eyes have an unsteady deviation, with the extraocular muscles performing spasm-like movements that continuously shift the eyes away from the position in which they would be directed to the same point in space, giving rise to diplopia. Even when the double vision images ...
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...
The Air National Guard intelligence unit involved in the massive classified documents leak by an airman last year has been recertified and will return to its mission on Saturday after months of ...
LOS ANGELES (Reuters) -Discord from last month's mob attack on pro-Palestinian student activists encamped at the University of California, Los Angeles, flared again on Tuesday as academic workers ...
Manhattan prosecutors won't be penalized for a last-minute document dump that caused former President Donald Trump’s hush money criminal trial to start later than scheduled, a judge ruled Thursday.
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
CAIRO/JERUSALEM (Reuters) -An Israeli airstrike triggered a fire that killed 45 people in a tent camp in the Gazan city of Rafah, officials said on Monday, prompting an outcry from global leaders ...
(Reuters) -Search teams on Sunday picked through wreckage left by tornado-spawning thunderstorms that swept the U.S. Southern Plains and Ozarks, killing at least 14 people and wrecking hundreds of ...
The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...
