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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]
RALEIGH, N.C. (AP) — Republican lawmakers in North Carolina are pushing forward with their plan to repeal a pandemic-era law that allowed the wearing of masks in public for health reasons, a ...
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
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The False Face Society is a medicinal society in the Haudenosaunee, known especially for its wooden masks. [1] Medicine societies are considered a vital part of the well-being of many Indigenous communities. The societies role within communities is to cure ailments through medical rituals, with the False Face Society having power over illness ...
When the helicopter carrying Iranian President Ebrahim Raisi went missing on May 19, initial reports said nine passengers were on board, including two bodyguards. But after the wreckage was ...