If you need to use lathes, saws, sanders and other power tools at home, then you need some protective eyewear. It should cover not only the front of the eyes, but also the sides and top, so that all small airborne particles do not get in. Hardware stores do sell shields that usually fit over glasses. But if you work with tools a lot, you will avoid fogging problems and be more comfortable if you buy a specially fitted pair of safety glasses that has polycarbonate lenses and frames. You could buy them from any eye-care practitioner. In some cases, you may even need a full face shield made of polycarbonate for yourself depending upon the kind of work you perform.
Safety glasses - the fitting and maintenance of safety glasses

If eye protection is required, then establishing a complete eye safety protection program including selection, fit testing, training, maintenance and inspection of your safety glasses. Below the fit and maintenance are discussed in detail
How the safety glasses fit you?
You must always ensure that your safety glasses fit properly. Eye size, bridge size and temple length of each individual vary. Thus, safety glasses should be assigned and fitted for each individual. Also, wear safety glasses so that the temples fit comfortably over your ears. Keep in mind that the frame should be as close to the face as possible and should be well supported by the bridge of the nose.
Safety glasses - maintenance
The maintenance that your safety glasses need is -
1. You should clean your safety glasses daily and follow the instructions of the manufacturer. Try avoiding rough handling that may scratch lenses.
2. Scratches can impair vision and can also weaken lenses.
3. Store your safety glasses in a clean, dry place where the chances of falling or be stepped on are less or nil. Also keep the safety glasses in a case when not wearing them.
4. Don't continue with scratched, pitted, broken, bent or ill-fitting glasses. Damaged glasses will interfere with your vision and will not provide protection.
5. For ensuring safety, replace the damaged parts only with identical parts from the original manufacturer.

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