Most of us already know that the definition of photo chromic lenses very well. The photo chromic glasses have gained much popularity among both the youth and the older these days because they could automatically adjust to changing light conditions all day. They have a variable tint that changes with the amount of available light. In bright sunlight, they darken; indoors, they become clear. A problem has been bothering those people who have a high prescription– whether they could choose the photo chromic glasses like the ordinary people. Read the rest of this entry »

When you want to order photochromic glasses, you could select them according to their functions and characteristics of these lenses, the requirement of individual aspects of color to consider. Photo chromic lenses have many kinds of colors, such as: gray, brown color, etc. Read the rest of this entry »

Sometimes, when you order your prescription glasses at local stores, the optician may asked you if you need to add special prism in the new eyeglasses lenses, so, what do you know about the prism? It takes me much time to understand it correctly. They are suggested to utilize in crossed eyes, lazy eye, or some other eye diseases! Read the rest of this entry »

Someone who wears thick lenses would tell you numerous problems of these lenses, and it can increases your a little self-conscious for wearing a little thinner. There are several different materials are made for lenses. Most of these lenses are designed to be thinner than a conventional lens which refers to that they have a higher Index of refraction. Index of refraction means the ability of lens to bend light. The prescription lenses are determined by two main factors that the index of refraction and curvature. The the index is higher, the less curvature needed thus the lens can be thinner. The lower the index is, the more curvature needed for the desired prescription therefore making it much thicker. Read the rest of this entry »