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By measuring this zone, the autorefractor can determine when a patient's eye properly focuses an image. The instrument changes its magnification until the image comes into focus. The process is repeated in at least three meridians of the eye and the autorefractor calculates the refraction of the eye, sphere, cylinder and axis.
An Amici roof prism. An Amici roof prism, named for its inventor, the Italian astronomer Giovanni Battista Amici, is a type of reflecting prism used to deviate a beam of light by 90° while simultaneously inverting the image. It is commonly used in the eyepieces of telescopes as an image erecting system. It is sometimes called an Amici prism or ...
Prescription cascade. Prescription cascade is the process whereby the side effects of drugs are misdiagnosed as symptoms of another problem, resulting in further prescriptions and further side effects and unanticipated drug interactions, which itself may lead to further symptoms and further misdiagnoses. This is a pharmacological example of a ...
History. Between 2013 and 2017, Prescription Songs held a joint publishing deal with Nashville -based Big Machine Records to build bridges between songwriters in the Nashville and Los Angeles music industries. The company expanded its own presence in Nashville with the establishment of a second Prescription Songs headquarters in 2016.
A Wollaston prism is an optical device, invented by William Hyde Wollaston, that manipulates polarized light. It separates light into two separate linearly polarized outgoing beams with orthogonal polarization. [1] The two beams will be polarized according to the optical axis of the two right angle prisms. The Wollaston prism consists of two ...
Prescribed daily dose (PDD) is the usual dose of medication calculated by looking at a group of prescriptions for the medication in question. At times the PDD needs to be related to the condition being treated. See also. Defined daily dose – Statistical measure of drug consumption; References