Properties of good eye protective lenses

Properties of good eye protective lenses:

Eye wears are made not only for correcting the vision but also for protecting the eyes from various external factors. Eyeglasses, especially sunglasses protect eyes from harmful ultraviolet rays. These glasses are good in filtering the sunrays and hence the dark colour under eyes can be avoided. Safety glasses are of different types, it includes safety goggles, sunglasses, eye protective glasses and helmets. Even prescription lenses can protect eyes within its limits from dust.

Composition of safety glasses:

Safety glasses are available in various colours. In Branded sunglasses, each coloured lenses are meant for filtering any particular colour that harms the eyesight.  Some glasses are made up of polycarbonate. The polycarbonate lenses should have highest resistance capability, light weight, scratch resistant and good protection from ultra violet rays. Glasses that are made up of plastics is about one half weight of glasses. It is possible to make different variety of colours using this material. Trivex is another important material used in safety lenses. They are excellent UV protectors.

Some important things to be noted while using any safety eye wear are:

a)      Ensure the safety lens is fitted properly.

b)      While wearing the safety glasses, make sure that the temples fit correctly over the ears and the frame should be close to the face as possible.

c)       While cleaning the glasses, follow manufacturer’s instruction. Avoid rough handling, that can make scratch on the lens.

d)      Replace the damaged or scratched lenses immediately since those lenses do not provide any protection.

e)      Replace the damaged parts with the original spare parts from manufacturers to ensure the full protection.

Some important occasions where safety glasses are important to use are:

1)      While engaged on work such as chipping, drilling, scaling, polishing, sawing etc., the chance of flying objects fall into eyes is more.

2)      While handling heat, spark and molten materials. People who are engaged in casting, welding, soldering, hot dipping etc. should use the safety glasses.

3)      While handling acids, alkalise, glass breakage and chemical sprays

4)      Abrasive blasting materials: During sand blasting, shot blasting and shot creating.

5)      Safety glass is a must to avoid glare falling in eyes that results in the loss of vision power. It is used while going out in hot sun, using computers for a long time, high intensity lights that flash from welding portion.

6)      When in contact with injurious optical radiation producing electric arc welding, heavy gas cutting, plasma spraying and cutting, atomic hydrogen welding and more.

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