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Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
The Cabinet Office of the Government of Japan describes Society 5.0 as an initiative aimed at ensuring safety, security, comfort, and health for all individuals, facilitating the pursuit of preferred lifestyles. It addresses existing stagnation by promoting a society that embraces technological advancements and social changes.
History. The chart was designed by Ian Bailey and Jan E. Lovie-Kitchin at the National Vision Research Institute of Australia. They described their motivation for designing the LogMAR chart as follows: "We have designed a series of near vision charts in which the typeface, size progression, size range, number of words per row and spacings were chosen in an endeavour to achieve a ...
Pseudoisochromatic plates are used as screening tools because they are cheap, fast, and simple, but they do not provide precise diagnosis of CVD. Lanterns, such as the Farnsworth Lantern Test, project small colored lights to a subject, who is required to identify the color of the lights. The colors are those of typical signal lights, i.e. red ...
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Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass. Such glass is subjected to less thermal ...
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