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The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test) is an objective, non-dissociative test used to prove the alignment of both eyes (i.e. the presence of binocular single vision) by assessing motor fusion. [1] Through the use of a 4 dioptre base out prism, diplopia is induced which is the driving force ...
September 23, 2024 at 12:34 PM. Getty Images. The California attorney general announced a lawsuit against ExxonMobil on Monday, alleging it engaged in a decadeslong deception about whether the ...
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 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 ...
This as-told-to essay is based on a conversation with Wannapa Suprasert, a 28-year-old from Thailand who's now based in San Francisco and who was scammed out of over $300,000.
Vision therapy (VT), or behavioral optometry, is an umbrella term for alternative medicine treatments using eye exercises, based around the pseudoscientific claim that vision problems are the true underlying cause of learning difficulties, particularly in children. [ 1 ]
The plane was due to fly from California to Hawaii, but its fuel equipment malfunctioned: lawsuit. Google cofounder Sergey Brin is facing a second lawsuit over a plane crash off the coast of ...
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