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White House press secretary Josh Earnest said that the incident "is a good illustration of how pernicious stereotypes can prevent even good-hearted people who have dedicated their lives to educating young people from doing the good work that they set out to do", and that Mohamed was invited to the White House South Lawn for Astronomy Night on ...
Bifocals. A bifocal lens with areas of differing magnification. Bifocals with separate lenses. In this case, the Swedish ethnologist Jan-Öjvind Swahn [sv]. Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...
Blue light-filtering glasses—commonly referred to as blue light glasses—are touted for their supposed ability to combat the physical consequences of excessive screen time.
Sellers of the glasses, which come in prescription and non-prescription varieties, claim they help keep the eyes healthy, reduce eye strain, improve visual performance, and even help people fall ...
Color blindness (color vision deficiency) is the decreased ability to see color or differences in color. It can impair daily color tasks such as selecting ripe fruit or choosing clothing, as well as safety-related tasks such as interpreting traffic lights. While the disability of color blindness is considered minor, the use of color in safety ...
A monocle is a type of corrective lens used to correct or enhance the visual perception in only one eye. It consists of a circular lens placed in front of the eye and held in place by the eye socket itself. Often, to avoid losing the monocle, a string or wire is connected to the wearer's clothing at one end and, at the other end, to either a ...
Updated September 16, 2024 at 10:44 AM. Republican vice presidential candidate JD Vance said Sunday he did not regret spreading baseless rumors that Haitian immigrants are stealing and eating pets ...