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Exophoria. Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another. [2] The axis deviation in exophoria is usually mild compared with that of exotropia .
The prism fusion range ( PFR) or fusional vergence amplitude is a clinical eye test performed by orthoptists, optometrists, and ophthalmologists to assess motor fusion, specifically the extent to which a patient can maintain binocular single vision ( BSV) in the presence of increasing vergence demands. Motor fusion is largely accounted to ...
The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
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]
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 ...
4. A more reasonable valuation. With the company's share price down 35% in the last month due to short-term worries about a few weeks of sales data, the time might be right for long-term investors ...
Rachel Leviss reveals how she feels about Tom Sandoval joining The Traitors, and whether or not she'll watch.
Shamil Salmanovich Basayev (Chechen: Салман ВоӀ Шамиль; Salman Voj Şamil; Russian: Шамиль Салманович Басаев; 14 January 1965 – 10 July 2006), also known by his kunya "Abu Idris", was a Chechen guerilla leader who served as a senior military commander in the breakaway Chechen Republic of Ichkeria.