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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]
Starkey Hearing Technologies is an American privately owned company based in Eden Prairie, Minnesota that makes hearing aids, and is one of the largest hearing aid manufacturers in the world. [1] As of 2019, the company had more than 5,000 employees in 24 facilities, serving more than 100 markets worldwide, and is the only American-owned global ...
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