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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 ...
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 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 ...
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]
Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.
Millennials and generations after will 'pay the full cost of fixing Social Security'. If Congress fails to act until 2035, the youngest member of Generation X will be 55 and will most likely be ...
The Guardian is a British daily newspaper.It was founded in 1821 as The Manchester Guardian, before it changed its name in 1959. Along with its sister papers, The Observer and The Guardian Weekly, The Guardian is part of the Guardian Media Group, owned by the Scott Trust Limited.
GNU arch - A very early [open,distributed]; deprecated since 2009 in favor of Bazaar. DCVS – A decentralized spin on CVS, last released 2006 and since discontinued. Monotone – [open,distributed], not updated since 2011. Quma Version Control System – [open] VCS, final release 2010, abandoned 2013. Sun WorkShop TeamWare – Designed ...
Windows 7 is a major release of the Windows NT operating system developed by Microsoft. It was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009. [9] It is the successor to Windows Vista, released nearly three years earlier.
Fixation disparity. Fixation disparity is a tendency of the eyes to drift in the direction of the heterophoria. While the heterophoria refers to a fusion-free vergence state, the fixation disparity refers to a small misalignment of the visual axes when both eyes are open in an observer with normal fusion and binocular vision. [1]