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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]
Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...
The 2021 British Grand Prix (officially known as the Formula 1 Pirelli British Grand Prix 2021 for sponsorship reasons) was a Formula One motor race held on 18 July 2021 at the Silverstone Circuit in Northamptonshire, England. It was the tenth round of the 2021 Formula One World Championship and also featured the first ever "sprint qualifying ...
The 2021 FIA Formula One World Championship was a motor racing championship for Formula One cars which was the 72nd running of the Formula One World Championship. It is recognised by the Fédération Internationale de l'Automobile (FIA), the governing body of international motorsport, as the highest class of competition for open-wheel racing cars.
The 2026 FIA Formula One World Championship is a planned motor racing championship for Formula One cars set to be the 77th running of the Formula One World Championship. It is recognised by the Fédération Internationale de l'Automobile (FIA), the governing body of international motorsport, as the highest class of competition for open-wheel ...
Third. Sergio Pérez. Red Bull Racing - Honda. Lap leaders. The 2021 United States Grand Prix (officially known as the Formula 1 Aramco United States Grand Prix 2021) was a Formula One motor race, held on October 25, 2021, at the Circuit of the Americas in Austin, Texas, United States. The race was the 17th round of the 2021 Formula One World ...
Specialty. Ophthalmology. Exotropia is a form of strabismus where the eyes are deviated outward. It is the opposite of esotropia and usually involves more severe axis deviation than exophoria. People with exotropia often experience crossed diplopia. Intermittent exotropia is a fairly common condition. "Sensory exotropia" occurs in the presence ...
The 2021 Bahrain Grand Prix (officially known as the Formula 1 Gulf Air Bahrain Grand Prix 2021) was a Formula One race which was held on 28 March 2021 at the Bahrain International Circuit, a motor racing circuit in the west of Bahrain. It served as the season opener of the 2021 Formula One World Championship, and was the seventeenth running of ...