There are many different lenses that have been specially created for certain purposes and needs.
An aspheric lens is one of the lightest weights of all lenses. They are available in bifocal or single vision prescription eyeglasses. The Allyl Resin plastic lens is also very light in weight. They do not offer the protection [...]
From documents that were retrieved in Rome in the 13th Century, we know that prescription eyeglasses were available at that time. They were referred to as “spectacles” rather than glasses. Although we do not know for certain when prescription eyeglasses were invented, we do have proof that they did exist during this time [...]
Prescription eyeglasses are manufactured in a variety of materials. The most basic is the glass lens. The glass lens is by far the best in absorbing ultraviolet light. It comes in several different colors and is, of course, scratch resistant. It is also one of the least expensive. The downfall [...]
There are a number of reasons why so many people around the world suffer from vision deterioration old age, disease of the retina, cornea to name but a few. To help with vision around 1284 in Italy, Salvino D’Armate inventing the first wearable eyeglasses but vision aids where around much longer D?Armate design was very [...]
