What do mean by Safety glasses?

The Safety glasses are generally made with shatter-resistant plastic lenses to guard the eye from flying debris. The Safety glasses can differ in the level of protection they provide. For instance, those used in medicine can be expected to protect only against blood splatter while this safety glasses in a factory might have stronger lenses and a stronger frame with added shields at the temples. The lenses of safety glasses can as well be shaped for correction or tinted to look after your eye against visible and near-visible radiation. Some safety glasses are intended to fit over corrective glasses or sunglasses. They may give less eye protection than goggles, face shields or other forms of eye safety, but their light weight increases the likelihood that they will in fact be used. Recent safety glasses have tended to be given a more classy design, to encourage their use. The pictured wraparound safety glasses are proof of this style change with the close fitting nature of the wraparound dispensing with the want for side shields. The Corrective glasses with plastic lenses can often be used in the place of safety glasses in numerous environments; this is one benefit that they have over contact lenses.