Posts Tagged specs

The strength of reading glasses was originally based on the patient’s age. For a man of 30″40 years lenses of 2 degrees were used, for 70″80 years, lenses of 4 degrees. It wasn’t until the middle of the 19th century that glasses started to be issued by people who knew some basics about optics.

When you go to buy your spectacles over the web, you need a system to help you quickly and sensibly selct the most suitable pair for you :

Eyeglasses or specs are fundamentally a set of frames bearing a couple of lenses borne in front of the eyes, normally for vision rectification, eye protection, or alternatively for protection from ultraviolet rays.