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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 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]
The iPhone 7 and iPhone 7 Plus are smartphones that were designed, developed, and marketed by Apple Inc. They are the tenth generation of the iPhone.They were announced on September 7, 2016, at the Bill Graham Civic Auditorium in San Francisco by Apple CEO Tim Cook, and were released on September 16, 2016, succeeding the iPhone 6, iPhone 6 Plus, iPhone 6S and iPhone 6S Plus as the flagship ...
Eyeglass prescription. Using a phoropter to determine a prescription for eyeglasses. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.
The Institute for Supply Management's manufacturing purchasing managers index for May fell to 48.7 from 49.2 in April. The factory sector has been under pressure for well over a year, with ISM's ...
King and JD Power project overall June sales will dip from an initial 1.41 million unit projection to between 1.27 to 1.33 million unit sales for the month, or a 2.6% to 7.2% decrease in sales ...
As of March, about 3.2% of outstanding debt was in some stage of delinquency, up from the 3.1% recorded the previous quarter but still down from the average 4.7% rate seen before the COVID-19 ...
List of iPhone models. The backs of an iPhone 6, an iPhone 7, an iPhone 8, and an iPhone SE (3rd generation) The iPhone, developed by Apple Inc., is a line of smartphones that combine a mobile phone, digital camera, and personal computer, music player into one device. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone ...