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Merits and Demerits of Bifocals and trifocals

April 7th, 2010 by Scott Mozayeni No comments »

Bifocals and trifocals are two of the most important varifocal lenses in people’s daily lives. Each of them has their own advantages and disadvantages. Here is some wanted information about the two lenses for many people, especially those new wearers.

Bifocals have two different vision areas, each of which is responsible for near vision and far vision respectively. But many people may hear from others that bifocal lenses problems are really very troublesome. This is partly true. All those problems are mainly caused by their unique structures. Those lenses are combined by two different cut lenses. That’s to say, each of them is responsible for vision at different distance. And many wearers may suffer from very serious dizziness and headaches occasionally when they change their vision radically. The reason is the optic nerves in wearers’ mind can not react in time with the vision change, and the brain will suffer greatly as a result. Another very common symptom is almost all people will spend some time to adapt them, though the time varies a lot.

In order to solve those problems caused by bifocals, lots of designers and professionals have spared no efforts to improve them. Later, the birth of varifocal bifocal lenses has satisfied wearers’ demands to some extent. Those lenses can ensure wearers enjoy great vision clarity and comfort without any aforesaid complications.

Trifocals are more advanced lenses than bifocals in some senses. There are three different vision areas in those lenses, namely, areas for far vision, intermediate vision and nearby vision. This design can help wearers more easily get used to them and reduce the chances of radical vision transition. Therefore, the cost of trifocal lenses is much greater than some bifocals and other conventional lenses. But there are some exceptions if wearers buy them from different retailers. For example, products from online vendors are much cheaper than optical stores. Still, people can also ask for help from certain Insurance Companies who provide such services sometimes.

In a word, those bifocal trifocal lenses can effectively help solve some particular eye problems, though people may withstand some discomfort while wearing. There is a trend that more and more innovations are made on them and more comfort can be found on them as well.

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Introduction about Bifocals for Sports Use

April 7th, 2010 by Scott Mozayeni No comments »

In our daily lives, bifocals are mainly used for two purposes- vision correction and accessories. However, there are still bifocals for other special uses. For example, HD bifocal sunglasses are just used by people who need to see objects or something much clearly than others. Therefore, with those particular functions, bifocals have gained momentum all the more. In particular, bifocals used in sports are really very nice and very popular among sportsmen and fans. Here is something about those glasses.

Due to the strong demands of sports men, some bifocal sport glasses come into being as a result. Those glasses are specially designed for sports and not good alternatives for other purposes.

For example, bifocal glasses for golf have won great popularity among sportsmen of golf and golf fans. Why are they so crazy about those glasses? Because such glasses can filter out many disturbing lights that may affect players’ performance; they can also help highlight the colors of the golf balls and weaken the colors of other objects, like grass around. Thus, by seeing through those glasses, players can see much clearly of those objects. And facts have also proved that people with those glasses can perform much better than those who do not.

Still, glasses for one sport is can neither be used in other activities. That’s to say, bifocals for golf can are not good choices for people who skis. This is because different sports require differently on their environment, their tools, their rules, etc. Therefore, people should choose the corresponding glasses for a particular sport activity.

There is another problem in wearing sport bifocals- what will people do when it comes to summer. Therefore, bifocal sport sunglasses are ideal devices in this period. Those sunglasses can help protect wearers’ eyes from being damaged by UV rays and other harmful radiations. Still, some of those sunglasses have other unique functions.

For example, bifocal sunglasses for fishing are just one of the most outstanding examples. Those sunglasses are beloved options for lovers of fishing. The environment for fishing is full of harmful rays and glares. Basically, they will protect eyes from be damaged by strong sun lights. Moreover, they are often polarized and can help filter out most glares that may also affect vision and injure eyes.

In a word, there are still many other bifocals for different sports use. Keep in mind; be careful about one point- particular glasses are for certain purposes only.

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Adaptation of Progressive Trifocal Glasses

April 6th, 2010 by William Krause No comments »

Eye is one of the most important organs for us. However, most of us have never noticed the fact that our eyes are prone to various sorts of diseases. Particularly, our eyes will also degenerate functionally as we age. For example, as our eye muscles become loose, we may suffer from presbyopia when we are over forty. But in most case what we have to face is our eyes may get several eye diseases simultaneously, except presbyopia. Eye doctors often suggest us to wear bifocals or trifocals in light of our problems. And most of us have noticed there are some defects in those glasses, such as their vision area changes radically and our eyes get uncomfortable. Later, some special products in the industry emerge- progressive trifocal glasses. It is true that those glasses give us a hope that we can enjoy 20/20 vision again. However, progressive trifocal glasses are not perfect as we have ever expected. Such as, each wearer has to spend some time to get used to them. Here is some information about the adaptation.

It is no denying that there is an adapting process for any one of our organs in a new environment, let alone our eyes. Our eyes have adapted to their former environment and their muscles, optics, etc. have also got to the related environment just for this reason. It is known that progressive trifocal glasses are very nice and can help solve our eye problems, but some time is still needed to get used to them. Almost all of us will have to experience this process.

Though all of us will have to go through this process, the adapting time varies a lot for people of different age group. Generally, young people will spend only several hours or several days to get used to them, whereas the older ones will have to spend much longer time, some will spend a month or so. Then, why young people will spend less time to get used to them than older ones? This is because the elasticity of the eye muscle in young people is much better and older people. In addition, people who have never or seldom worn eyeglasses will also spend less time in this process. And for those who have worn glasses for very long time, their adapting time is much longer than ordinary people.

Most of us will think all people enjoy very nice vision after experiencing adaptation. This is a misunderstanding. Some studies have disclosed that almost 5% of glasses wearers can not get used to progressive trifocal glasses, though the reasons are still unknown. This is really horrible news for some of us. Therefore, one of the best ways to know whether we are good candidates for progressive trifocal glasses is to receive some eye examinations before buying them. Usually, our eye doctors will give some good suggestions about this.

Of course, sometimes the in-adaptation may be caused by the eye glasses. If so, we can visit the optical stores and ask the opticians for help. In such cases, the opticians will readjust those glasses according to our eyes. If there are no problems in our eyes, we will get used to those progressive trifocal glasses immediately.

Anyway, progressive trifocal glasses are really good alternatives for any of us who have some particular eye problems, though we will have to adapt to them for some time.

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More to Know About Some Special Bifocal Sunglasses

April 6th, 2010 by William Krause No comments »

Bifocals and sunglasses are some of the commonest glasses products in the market. And if the two are combined together, what will they be? Yes, there are also bifocal sunglasses in the market. But there are still many species in this series. Here is an introduction about several special bifocal sunglasses.

The first one is bifocal reader sunglasses. The most evident features in those sunglasses are their reader related functions. They can be used as readers. People can read something in the sunlight without worrying about any damage to their eyes. Those sunglasses will automatically filter out any harmful rays and radiation that can injure eyes. Or to some extent, they can help magnify what people see. Therefore, those bifocal sunglasses are good devices for the ones who love to read in the sun.

Another one is bifocal reading sunglasses polarized. They are much advanced products in the industry. Those sunglasses are good alternatives for people who read around some particular surroundings. For example, if people read or do something on the boat, there glare reflected by the water are really harmful. Because those sunglasses are polarized, they can block any glares and reflecting lights. Therefore, they can ensure a very sound reading environment. To be simple, those particular sunglasses can bring great benefits to people who often read or go outdoors.

Bifocal safety sunglasses are also very particular species. Like safety glasses, those sunglasses can protect wearers’ eyes effectively, for their sizes are relatively larger. Those sunglasses are very powerful in filtering out any glares, UV rays, and other radiations. Most people who often go outside love to buy them. And now, those sunglasses are made the same as ordinary glasses in styles and designs, not like safety goggles at all.

There are still some glasses for professional use- bifocal sport sunglasses. Those sunglasses are totally different from other types. To some extent, they are just designed for particular sports. For example, sunglasses for golf are totally different from that for fishing. The reason is very simple- those sunglasses can help highlight some wanted colors and filter out some disturbing lights. Still, those sunglasses can help protect eyes and skins around them. Therefore, such sports sunglasses can not only help sportsmen perform much better, but also protect their eyes. So, many sports lovers deem those sunglasses as their best friends.

The above mentioned bifocal sunglasses are just some of the most outstanding ones. And people can know more species by visiting Firmoo.com.

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Polarized Titanium Eyewear

April 5th, 2010 by Jean Caster No comments »

Polarized titanium eyewear, as its name suggest, is composed of titanium frame and polarized lens. Combining the merits of both titanium and polarization, polarized titanium eyewear besides offering a soft and clear incomparable vision makes itself the lightest in weight and the best in durability.

Titanium as an indispensable material in advanced technology is 48% lighter than other metals and are resistant to acid and alkali, anticorrosion and of high stability and intensity. It also has neither radiation nor toxic side effects to human body. Therefore, polarized titanium eyewear, superadded the polarized lens specially engineered to block the blinding rays of glare, is of high flexibility while protects eyes from UV and fierce light; is fadeless while enhances visual color contrast; and is anti-oxidation while cuts off reflective glare from snow, water and pavement.

As mentioned above, polarized titanium eyewear did no harm to human health, instead it brings benefits. Recently, a Japanese research reveals that titanium has a particular current characteristic which is able to produce ions as a result of electron waves, easing tense muscles. Thus wearing a pair of polarized titanium eyewear, one would likely to get mentally relaxed and fatigue removed.

What is that when light and durable styles out there meet unbeatable vision performance? Polarized titanium tells you the truth. It is a perfect. With the ultrahigh and intense frame and extend clarity to a wide peripheral view and protection to the delicate area around the eyes provided by the lens, polarized titanium eyewear will make you enjoy everyday with fun and relaxation.

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What Do You Know About Progressive Lenses?

April 5th, 2010 by Jean Caster No comments »

Progressive eyeglasses lenses are now becoming some of the most favorable products for wearers. Those lenses are really unique in many aspects, and can help overcome many demerits in conventional lined lenses. And there are two main forms of those lenses, namely bifocal and trifocal. Here is some detailed information about the two lenses.

Progressive bifocal lenses are some of the earliest products in this series. They are the results of upgrading on bifocal lenses. Bifocal lenses are lined with two very evident vision areas on the top and lower part of the lenses respectively. It is true that those lenses have helped many people initially. However, some problems also arise in those lenses- some people find it is very uneasy to wear those lenses, for they have to suffer from sudden vision change while looking at objects of different distance; or some other people can not withstand such pain. Therefore, the emergence of no-lined lenses is wanted. Those progressive lenses have really overcome those problems and shortcomings successfully.

But there is a fact, that some people find those progressive bifocals are not so nice in some situations. For example, the vision areas are also too radical and there should another vision area for transition. Henceforth, the coming of progressive trifocal lenses has benefited a lot of wearers. They find that those advanced lenses are really ideal for them. They have both those merits in progressive bifocals and some their own advantages. Usually, wearers will feel much comfortable with them, for the vision changes are very natural. Still, these lenses can also ensure people enjoy great vision clarity. Or some wearers think they feel no lenses on their faces with them.

In fact, the result of progressive Vs trifocal lenses can reveal much great difference between the two. They are totally different in solving eye problems and other compilations in common glasses. The former one can also provide great comfort to wearers at any time with great vision clarity, whereas the later has some shortcomings.

In conclusion, progressive spectacles lenses are much better than ordinary lined lenses. And it is a good idea to choose them at any time, for more and more achievements are now made on them in terms of both functions and designs.

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Progressive Bifocals and Their Family Members

April 5th, 2010 by Jean Caster No comments »

Bifocals are some of the best devices for people with near vision and far vision problems. However, there are much more advanced choices- progressive bifocals. Those glasses and their family members can ensure more comfort.

Then some people may ask- how do progressive bifocals work? In order to answer the question, it is better to look at the structures of those glasses. Progressive bifocals are upgraded on the basis of bifocals. Generally, there is an evident division line in bifocal lenses and this will lead to very radical vision changes. The top part of the lenses is responsible for far vision and the lower part for nearby vision. But wearers will suffer from some complications with those ordinary bifocals. On the contrary, progressive bifocals can provide more comfort, for no division line can be found on them. Therefore, wearers will never suffer from dizziness caused by sudden vision change. Every vision area is naturally transmitted. Therefore, some may think no glasses on their faces.

In addition, progressive bifocals have their own brothers. Here are two of them.

Progressive bifocal sunglasses are just such brothers. It goes without saying that wearers require very highly on the functions and designs of bifocal glasses. In particular, when it comes to summer, wearers of bifocals tend to wear sunglasses. And the emergence of those fascinating sunglasses has helped them a lot. People with them are really very cool to look at.

Progressive bifocal contact lenses are even unique ones. Generally, it is very hard to manufacture contact lenses with multiple focuses. But there are they. Those contact lenses are almost the same as other bifocal glasses functionally. They have one more advantage- never affecting people’s personal images. Some people may think progressive glasses may damage their imagers and they tend to wear contacts. Therefore, those lenses have benefited them a lot. Furthermore, those contact lenses are meticulously designed and manufactured, and they will not fall out easily.

Some people are concerned to cost and they may wonder how much do progressive bifocal lenses cost. Those lenses are much accurate than other ordinary lenses in both prescription and making, so they are relatively expensive. Even though, they can give the best result that people have expected.

And now, progressive bifocals and their family members are trying to give wearers more benefits and comfort.

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Benefits of Polarized Optics and Polarized eyewear

April 4th, 2010 by Randa Fritch No comments »

Polarized optics or polarized eyewear, including polarized sunglasses, driving glasses, shooting glasses and polarized clip-ons, etc., which performs different from ordinary ones, has been getting in popularity. Therefore, there’s a need to come down to what polarized optics bring to us, the benefit of polarized optics.

Light waves travel in so many directions that when they come to water, snow, and wet floor, reflective glare creates which reduces visual acuity, distort color, causes temporary blindness and so on. Unfortunately, eyewear we conventionally wear merely lessen the intensity of glare but never completely cut off it and light transmits trough lens horizontally and vertically. On the contrary, polarized optics absorb light waves traveling in any direction other than the vertical plane, which means that light transmits polarized optics only in one direction. By this way glare that come from other directions is impossible to pass through polarized eyewear. What’s more, another merit polarized optics possess that makes them surpass others is its adjustment of visual contrast and improvement of color recognition. Thus drivers wearing polarized optics will be able to differentiate a red light from green in case of causing accident.

Polarized optics serves a purpose in every outdoor activity to protect eyes. With polarized eyewear, fishermen will see fishes swimming freely in the water; with polarized eyewear, photographers will have a more charming vision in the sunshine; with polarized eyewear, golfers will be allowed to follow their balls and accurately determine how far the hole from them are.

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Merits and Demerits in Progressive Lenses

April 4th, 2010 by Randa Fritch No comments »

Not long ago, if people have both near vision and far vision problems simultaneously, they have to wear bifocals or trifocals. However, there is a great problem in the two glasses- radical vision changes. That’s to say wearers will have to endure some complications caused by this. And they are eager for some much advanced products. And later, the emergence of progressive lenses has successfully satisfied people’s demands.

Moreover, those lenses have some unique features compared to bifocals and trifocals. Of which, the manufacturing of them is really very special. For example, progressive lens designs are just very typical examples. Generally, such designs are completely embodied in progressive sunglasses. Wearers will find that many innovations are made on those sunglasses, as they can be worn for various purposes for different people. If people love to play golf, they can wear certain sunglasses for golf. They can help them perform much better in the activity. Still, those sunglasses are really very nice to look at, keeping with the latest fashion in the industry.

However, regular wearers of those lenses find that some progressive lenses problems can never be avoided at any time. This is because those problems are some inseparable parts of those lenses. One of the greatest problems is almost all wearers have to spend sometime adapting those lenses. And the adapting time varies a lot amid people of different groups. For instance, younger people may spend less time than those older ones; those who seldom wear glasses may spend less time than those regular wearers of other glasses.

In addition, how much do progressive lenses cost is also a frequently asked question by many consumers. Those lenses are really much expensive than other ordinary glasses. Generally, a pair of those glasses will cost $300 on average and such price can not be afforded by many wearers. Luckily, there are some cheap lenses in the market. Such as, the online vendors often sell cheap lenses of different sorts. Also, consumers can also ask insurance companies for help.

Anyway, progressive lenses are really very nice to have on, though they have some demerits.

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How designer vision wear change women’s view on eyeglasses

April 3rd, 2010 by Arthur First No comments »

Not long ago, wearing glasses will draw teasing from people around you, especially for womens vision wear was the synonym of ugliness.

In the recent decades, with most of the fashion designers entering the market, vision wear gradually becomes a part of fashion industry. Designer vision wear not only provides the vision correction which the wearer need, but also enhances the wearer’s look. This aesthetic function boost the popularity of designer vision wear among women. These days designer vision wear meets the most of womens vision and fashion needs. Now vision wear is no longer considered to be geeky, instead womens vision wear becomes the synonym of beauty and glamour.

As designer vision wear bears the famous names together with the perfect quality both in materials and craftsmanship, generally the price for designer vision wear is much higher than normal ones. You may need to spend a little time searching for some discount vision retailers if you do not want to pay that much for your vision wear. A good recommendation is to visit your local vision wear retailers first, jot down the models and names, then go to look for the same or similar styles in the online stores. Mostly these online stores can offer the best ever prices on the designer discount vision wear. Online discount vision operators take the advantage of virtual market and can save immense expenses incurred by brick and mortar stores.

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