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aspherical
(redirected from aspheric)

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aspherical 
Literally 'not spherical' but this term is usually restricted to surfaces of revolution having identical but non-circular (e.g. parabolic) sections in all meridians (British Standard). See aspherical lens.
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The lenses provide a clear and sharp vision since they are aspheric as compared to other glass lenses.
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Frequency These contacts are created with the user in mind and they have a range of types including multifocal and aspheric among others.
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Some brainbox in the eyeglass design field has finally discovered that they can fulfill the wishes of the majority of people looking to purchase reading eyeglasses with a standard aspheric lens usually made from polycarbonate or other high quality lens material.
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