What Are Spectacles?
Spectacles are optical appliances consisting of lenses fitted in a frame or a mount with sides extending outwards to the ear. What is the difference between a frame and a mount? A mount is essentially a frame with no rim at the bottom so that the lenses are supported by holes or slots. What are the parts of spectacles? A central “bridge” with “pads” which rest on the nose; the lenses which are supported by the “rims” which extend to form the “lug”, an extension on each side fitted with a “joint” to which is connected a “side” or “temple” which passes over the ears. What is a lens? Basically a solid material, glass or plastic or even synthetic resin combinations. Its only requirement is that it be transparent and be capable of bending or refracting the light. How does one know one has a good “lens” fitted in one’s spectacles? (a) Have them made by a “reputed” dealer. He has his reputation to maintain. (b) Have them checked by your doctor. (c) Look for lens flaws, striations, pits in the
