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Mares is a manufacturer of scuba equipment. Founded in 1949 by Ludovico Mares in Rapallo , Italy, the company initially made diving masks and spearguns . It has since expanded to become one of the largest scuba manufacturers, having merged with US manufacturer Dacor .
Goggles, or safety glasses, are forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking .
In glasses with powers beyond ±4.00D, the vertex distance can affect the effective power of the glasses. [4] A shorter vertex distance can expand the field of view, but if the vertex distance is too small, the eyelashes will come into contact with the back of the lens, smudging the lens and causing annoyance for the wearer.
A prescription of −1.00 +0.25 × 180 describes a lens that has a horizontal power of −1.00 D and a vertical power of −0.75 D. Only ophthalmologists write prescriptions in + cylinder. An optometrist would write a prescription in - (minus) cylinder. All spectacle and contact lenses would be made in minus cylinder.
Reading glasses are available without prescription from drugstores, and offer a cheap, practical solution, though these have a pair of simple lenses of equal power, and so will not correct refraction problems like astigmatism or refractive or prismatic variations between the left and right eye. For the total correction of the individual's sight ...
Michael A. Mares is an American zoologist, academic, and author. He is the Emeritus Director and Curator at the Sam Noble Museum , as well as a Professor Emeritus in the Department of Biology at the University of Oklahoma .