Adjustable Pads are the little plastic nose pieces on metal frames that rest on your nose; they are attached to the frame by thin metal prongs which can be bent so that the flat surface of the pads is aligned comfortably on the sides of your nose.
This is a coating applied to the lens surface which significantly reduces how easily your lenses can be scratched.
Anti Reflection + Anti Scratch ( ARS ) This is a coating applied to the lens surface which dramatically reduces reflections off your glasses so that people can see your eyes better, it also makes your lenses look thinner because light doesn't get trapped inside the lens causing internal reflections and the dreaded 'bottle bottom' look. They are better for driving at night because of reduced glare from reflections and better light transmission through the lens. This coating is also anti scratch.
Anti Grease + Anti Reflection + Anti Scratch ( AGRS ) Made from a Teflon like material this coating helps to keep your glasses clean. It incorporates the Anti Reflection and Anti Scratch properties as well.
Aviator This is the shape of frame synonymous with pilots - think Tom Cruise in Top Gun. They are wider at the sides than near the bridge.
Bifocals After 40 years of age people begin to have difficulty changing focus from distant objects to near ones and back. This is because the lens of the eye becomes less pliable with age.
To overcome this it is possible to have a lens made with two separate focuses; these are Bifocals and will be recognised as those having a small segment at the bottom of the lens. They are usually shaped like a letter D on its side, flat side up, sometimes the flat side is slightly curved.
Bridge This is the part of the frame that connects the two lenses together and sits above your nose.
Cat’s Eye Shape this is the upswept, usually thick plastic frame that was first popular with women in the 1950’s. Currently back in Vogue.
Comfort Bridges are silicon moulded pads of metal frames that fit ergonomically on your nose to spread the weight of the glasses over as wide an area of the nose as possible for maximum comfort. They often have a metallic core so that they can be bent to fit your nose’s shape.
Key Hole Bridge is a space between the two lenses of a plastic frame with a circular gap at the top so that it looks like a key hole. This shape was popular long ago and is now used in Retro Collections.
Mirrored Lenses are the highly reflective lenses that look like they are polished chrome. They work like a one-way mirror so that other people cannot see your eyes.
Reactions lenses will go darker in sunlight and become clear out of sunlight. They are available in grey and brown colours. Unless you have a preference, chose the colour to match your glasses eg grey lenses to silver or gunmetal glasses and brown lenses to gold metal or brown plastic glasses.
Rimmless frames do not have a conventional plastic or metal front. Instead the lenses are bolted to metal bridge and side mounts that hold the lenses in place on your face.
Saddle Bridge< is a plastic bridge that rests on the nose snugly all round from the sides of the nose to the apex.
Semi Rimless or Supra frames have no frame at the bottom. Instead the lens is held in place by a thin nylon cord.
Sides or arms are the two parts of the frame that are hinged to the frame front and run down the side of your head to loop around your ears.
Single vision lenses are simple lenses to which we are all accustomed, they may be used for distance or near vision.
Sprung Sidesare the side arms of glasses that have hinges with built-in springs so that the sides will press gently against the side of the head whilst in use and spring shut when they are folded up to be put away.
Titanium is an ultra-light metal alloy that was developed for the airline industry. It is very strong and non-allergic making it the ideal, if more expensive, choice for metal frames.
Tortoise Shell Frames >are mottled plastic frames ranging in colour from dark Havana to light Amber with swirls and splotches of darker colour within it to give the appearance of polished turtle shell which was once used to make beautiful eyewear.
Varifocals are blended bifocals and give a variable focus effect for people over 40 who have lost some of their range of focus.
Wrap Around frames are usually sunglasses – think Terminator! The frame front is far more curved than normal to sweep around the front of the face towards the temples.