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...otection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radia * [[Progressive lens]]: Spectacles with a smooth transition between parts with different focal l

...as with [[reading glasses]] and [[glasses]] used for [[near sightedness]]. Safety glasses provide eye protection against flying debris or against visible and * [[Lens (optics)]]: A piece of glass or other transparent substance with curved sid

* '''[[Safety Glasses]]''': Protective eyewear that prevent foreign objects or chemicals * '''[[Lens (optics)]]''': A piece of glass or other transparent substance with curved

...ses on the clinical care, research, and operational support of the health, safety, and performance of crewmembers and passengers of air and space vehicles, t ...in most areas of activity, but need assistance and/or monitoring to assure safety and well being.

...king at a distant object (and vice versa), comprising changes in vergence, lens shape, and pupil size. ...the eye that includes the ciliary muscle, which controls the shape of the lens, and the ciliary epithelium, which produces the aqueous humor.