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W Series. 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 ...
A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. Thus a prism of 1 Δ would produce 1 cm visible displacement at 100 cm, or 1 meter. This can be represented mathematically as: = where is the amount of prism correction in prism dioptres, and is the angle of deviation of the light.
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.
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. It is the opposite of exotropia and usually involves more severe axis deviation than esophoria.
Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.
Incomitant strabismus cannot be fully corrected by prism glasses, because the eyes would require different degrees of prismatic correction dependent on the direction of the gaze. Incomitant strabismus of the eso- or exo-type are classified as "alphabet patterns": they are denoted as A- or V- or more rarely λ -, Y- or X-pattern depending on the ...
The 2021 Saudi Arabian Grand Prix (officially known as the Formula 1 STC Saudi Arabian Grand Prix 2021) was a Formula One motor race, held on 5 December 2021 at the Jeddah Corniche Circuit, in Saudi Arabia. The inaugural Saudi Arabian Grand Prix, it was the 21st round of the 2021 Formula One World Championship .
A satellite image of the Circuit de Catalunya in 2018, before the tenth turn was altered. The race was the fourth round of the 2021 Formula One World Championship, the 61st edition of the Spanish Grand Prix, the 51st time it featured as a round of the World Championship, and the 31st time the Spanish Grand Prix took place at the Circuit de Barcelona-Catalunya.
The 2021 Mexico City Grand Prix (officially known as the Formula 1 Gran Premio de la Ciudad de México 2021) was a Formula One motor race, held on 7 November 2021 at the Autódromo Hermanos Rodríguez in Mexico City. The race was the 18th round of the 2021 Formula One World Championship and marked the 21st edition of the Mexican Grand Prix ...
Amblyopia. Anisometropia is a condition in which a person's eyes have substantially differing refractive power. [1] Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition . [2] [3] Patients may have up to 3D of anisometropia before the condition becomes clinically significant due to headache, eye ...