Markings on safety glasses:
The manufacturer or supplier logo is marked (or etched) on all approved safety lenses, frames (front and temple), removable side shields, and other parts of the glasses, goggles, or helmets.

Frames:
Safety frames are stronger than street-wear frames and are often heat resistant. They are also designed to prevent lenses from being pushed into the eyes.

What are the pros and cons of the different lenses?

Polycarbonate:

• strongest material for impact resistance

• lightweight

• flexible; lenses easier to change

• high visual transmission (91%)

Plastic:

• stronger

• more choice of tints than polycarbonate

• lightweight (is only 3% heavier than polycarbonate)

• sheds metal splash and spatter the best

What should I know about the fit and care of safety glasses?
If eye protection is required, establish a complete eye safety protection program including selection, fit testing, training, maintenance and inspection.

Fit

• Ensure your safety glasses fit properly. Eye size, b ridge size and temple length all vary. Safety glasses should be individually assigned and fitted.

• Wear safety glasses so that the temples fit comfortably over the ears. The frame should be as close to the face as possible and adequately supported by the bridge of the nose.

Care:

• Clean your safety glasses daily. Follow the manufacturer's instructions. Avoid rough handling that can scratch lenses.

• Scratches impair vision and can weaken lenses.

• Store your safety glasses in a clean, dry place where they cannot fall or be stepped on. Keep them in a case when they are not being worn.

• Replace scratched, pitted, broken, bent or ill-fitting glasses. Damaged glasses interfere with vision and do not provide protection.