Posts Tagged ‘Progressive lens’

It Is Now an Era of Multi-focal Lens

April 8th, 2010

Single vision glasses are the main products in the market since their appearance over 8 centuries ago. However, when it comes to the 21st century, varifocal lens, also called multi-focal lens, has become the new fashion and tendency among wearers. Then, some people may ask- what is a vari-focal lens? It is lens with more than one focuses. And here is an introduction about several multi-focal lenses.

In fact, the earliest multi-focal lens can be dated back to the 18th century when Benjamin Franklin had made the first bifocal lens. Therefore, bifocals are the earliest multi-focal lenses. They have two focuses- the far vision and near vision focal. Generally, the upper part lens is for far vision and the lower part for near vision. However, wearers of bifocals find that they can not see clearly of objects at intermediate distance, though they can read and see things in the distance.

Therefore, the great demands have prompted the coming of another special lens- trifocal lens. As it mentioned that wearers can not see objects of arm-length distance with bifocals, trifocals can solve this problem perfectly. Compared to bifocals, they have one more focus- intermediate focal. So there are three vision areas on trifocals, say, near vision, intermediate vision and far vision areas. Henceforth, wearers of trifocals can enjoy great vision clarity.

However, there is a great problem in both bifocals and trifocals- radical vision changes. When wearers of the two lenses move from one vision areas to another, they will have to experience radical vision transition. And some wearers have to endure the pain of dizziness and headaches caused by the radical vision changes.

Then, wearers are in need of multi-focal lenses with natural vision changes.

Later, the birth of progressive lens has eliminated the aforesaid problems. No division lines can be found on this lens. That’s to say, the transition among all vision areas is natural and never radial. Many wearers have benefited a lot from it. Or some always think it seems no lens on their faces with it.

And later, there are also glasses combined by progressive lenses, bifocals and trifocals. They have satisfied wearers with different demands. All in all, multi-focal lens is always in the process of evolution and more achievements will be made in future.

Progressive Lens- Best All the Way

April 3rd, 2010

The revolutions of progressive lenses like this- from ordinary lenses to special lenses or from single-vision lenses to vari-focal lenses. Therefore, the functions of those lenses are enhanced all the more. And now more and more people want to wear progressive lenses, for this special varifocal special offer can really help solve many problems they have encountered in their daily lives. Lens of this type is totally different form others. Here is a simple introduction about it, judging from different point of view.

One of the most important things people have to consider is the cost of this lens. How much does progressive lens cost? It depends. Usually, progressive lens is much expensive than other ordinary lenses. The reason is very simple- this lens is the result of the latest technology; it must be made with the best materials in the industry, so as to ensure clarity, etc. Generally, this lens is about $100 higher than ordinary glasses from optical stores. It seems lots of people can not afford it. However, there are several ways to cope with it. One is to ask for help from insurance companies. This is practical in most cases. Another is to get it from online vendors who often sell products at discounts. Many consumers have benefited a lot from this purchasing channel.

Many people are very concerned about progressive lens design. This is because lens is no longer for vision correction only and many people love to use it as accessories. So, the design of this lens should keep up with the latest fashion. And facts have proved that many manufactures have made it, so as to meet the demands of consumers. And consumers are also very crazy about it. For example, some people tend to buy several pairs if they have to make their appearance on different occasions.

One point many people often neglect is the prescription of progressive lens. This process is crucial in buying progressive lens. It must be meticulously prescribed and no mistakes can be made, or the prescription will be useless. Any discrepancy in the prescription and making process will lead to the failure of qualified lens.

All in all, more points about progressive lens are needed if people want to buy it. And they are suggested to visit some related websites.

Progressive Lens- More to Know

March 23rd, 2010

Progressive lens is now one of the most popular products in the market. For example, some regular wearers of other lenses begin to try on it; some people just wear progressive lens only, etc. Then, can this completely reflect the real facts of it? No really. Or some people think a progressive lens comparison to other products is good. It can not work, either, for more things related to it self should be noticed.

The foremost point is firmly linked to cost. And people may ask how does progressive lens cost when they decide to buy it. The answer is still uncertain, depending on different occasions. Usually, progressive lens is much expensive than other conventional lenses, for more efforts must be spent in prescribing and making it. And the results are- if bought from the same shops, progressive lens is relatively expensive; but if it purchased from different retailers, the price may vary a lot. For example, some vendors sell progressive lens online and this may greatly reduce the related cost. Therefore, progressive lens from online vendors is much cheaper than conventional glasses from real optical stores.

The second is related to design. It is an age of fashion and trend. And glasses industry is also greatly influenced. Glasses are now used not only for vision correction, but also as accessories. Therefore, people require high of progressive lens design. Of course, progressive lens has never failed any one of the wearers. It is always one of the most outstanding members in the industry in terms of fashion. For example, Varilux, one of the first inventors and manufacturers of progressive lens, has always maintained its advantage in fashion designs. And wearers around the world are fascinated by its products.

The third is about demerits. Some may think now that progressive lens is so nice and perfect, is there any problem on it? It is true that some progressive lens problems often happen if not noticed. For example, some mistakes will happen if the prescription of the lens is not accurately made; and some people can never adapt it for unknown reasons; some people have doubts in buying it, etc. However, in order to avoid those problems, people should consult with their eye doctors and ask help from manufacturers.

In a word, progressive lens is reliable for people with both near vision and far vision problems.