'Aspheric' refers to a type of lens design. It is recommended for those high-powered reading and magnifying eyeglasses. There is also an aspheric design for those who are very near-sighted and wear...
Tag: optical magnification
Hand-held optical magnifiers come in many styles, sizes, and magnification powers. Commonly, they are sold as either round or rectangular clear lenses, with a handle. Other types include small pocket...
