May
Advantage and disadvantage of bifocal eyeglasses lenses
by admin in Bifocal Glasses
There is a vivid saying always describing the symptom of vision problem presbyopia:” too short arms”. Actually, majority of people cannot escape from such eye disease because of the growing age. At our early years, we may don’t need to wear prescription eyeglasses lenses or just for correcting a minus diopter, but when the folks come their age of 40s or even 50s, items closing to their eyes seem to become to be fuzzy. Patients who are suffered from the disease of presbyopia usually need to strengthen the arms to the limit to have a clear vision for reading materials, such as magazine, newspaper and so on. If you belong to the group of guys who just have the problem of looking at distance, you can wear single vision reading eyeglasses lenses, however, more individuals need to wear bifocal eyeglasses as they also have the vision problem of myopia! Keep reading »
May
What do you know prism in eyeglasses lenses?
by admin in Glasses Lenses
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! Keep reading »
Apr
Multifocal Eyeglasses
by admin in Progressive Lenses
You can usually find a person who needs multifocal eyeglasses from across the room. They are often squinting to see the menu board with their reading glasses and replace the other regular glasses for distance vision. In the past, there were very limited options for wearers, but now they can rejoice, because there is a lot more to choose from. Keep reading »
Mar
The advantage of progressive lens glasses
by admin in Progressive Lenses
With the development of the hi-tech progressive lens glasses, this type lens is becoming very popular. When people are aged over 40, lots of them can’t see words nearby clearly, and they need to wear presbyopic eyeglasses. This background is that presbyopia makes it necessary to wear multifocal glasses. The presbyopic patients are quite bothered, because the switches between two pairs of prescription glasses are so troublesome. They need to wear two pairs of prescription glasses for nearsightedness and presbyopia respectively. Majority of these people would like to use reading glasses only in office or at home during the long terms of reading.
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Mar
Prescription Eyeglasses Lenses
by admin in Prescription Lenses
Prescription eyeglasses are made of diverse materials. The traditional one is glass lens. But now it has been gradually replace by plastic lenses. But in fact, by far glass lens is the finest one in absorbing the ultraviolet light. Similar to plastic lens, glass comes in the several diverse colors and has anti-scratch coating. What’s more, it is much more inexpensive than plastic lenses. The reason of downfall of glass lens is the weight of the prescription eyeglasses which is made of the glass. They are also very breakable which may injury eyes easily as well as have to experience the heat-treated procedure in order to ensure the durability. Keep reading »
Feb
What Are High Index Eyeglass
by admin in Glasses Lenses
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. Keep reading »
