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Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex. Light will be bent towards the base and the ...
The hooded grebe ( Podiceps gallardoi ), is a medium-sized grebe found in the southern region of Argentina. It grows to about 32 cm (13 in) in length, and is black and white in color. It is found in isolated lakes in the most remote parts of Patagonia and spends winters along the coast of the same region. In 2012 IUCN uplisted the species from ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
The Gym People Tummy-Control Capri Pants. $28 $34 Save $6. These ultra-flattering pants move seamlessly from workouts to errands to casual evenings out. $28 at Amazon. If you have Amazon Prime ...
From capri silhouettes to full-length variations, there is a legging style that will elevate your workouts or lounging attire. We rounded up 13 plus-size high-waisted leggings that will prevent ...
Stylish both in and out of the water, this one piece effortlessly mixes sporty and sexy with the adjustable neckline. Snap the buttons up for some extra coverage or let them fly when you want to ...
Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a ...