Disposable contacts are worn for a specific period of time, then thrown out and replaced with fresh lenses. Because of the freshness and hygiene, they have become the most common type of contact lenses.

Why are they so popular? Because they minimize the possibility of eye infections, and meanwhile eliminate the possible dry eye symptom. These are features that other contacts can not provide with. Besides the above features, disposable contact lens wearers do not have to disinfect their contact lens container, that is to say there is no hassle with cleaning the lenses, but there is one important safety rule: if you take a lens out, throw it away and put only clean, fresh, sterile lenses on your eyes, or eye infections and irritations, etc.. will fall on you as well.

In addition, materials applied by disposable contacts are softer and more porous materials. They tend to allow more oxygen to enter into the eye. This is a rather significant characteristic for our eye health. With more air in, eyes will be less possibly irritated. Unlike contacts of hard lens, disposables will not make wearers feel rigid and uncomfortable, thus there is a lower risk of irritation and infection.

However, in spite of so many advantages of disposable contacts, not everyone is suitable to wear disposable contacts. Those who produce more protein and lipids than others, their eyes may need to be replaced more often, so may you if you have eye allergies.

Therefore, when you go to see an eye doctor for contacts, you should consult relative issues with your eye doctor in details.

Types of disposables are of variety, ranging from daily disposable contact to monthly disposable contact, from which you can choose that suitable to you most.

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Like other market, there is a market leader in contact lenses. If you are one of the patient who wear contact lenses, you may have heard Cooper vision, which is the leading company in the market of contact lenses. It is much more competitive than the other companies of contact lenses makers due to its efficiency and cost effectiveness.

Why is Cooper vision so popular among people who wear contact lenses? This is because Cooper vision offers their customers not only excellent products but also sound business practice. People who wear Cooper vision contact lenses can feel comfortable but not eye dryness which is a common discomfort caused by normal contact lenses. The customers can also feel secure and get content service.

Contact lens is one of the most important fields of Cooper Vision. The most popular product range of Cooper Vision contact lenses is soft contact lenses, which is especially well- known for its specially designed materials.

This material is much lighter in weight than other contact lenses. What’s more, it allows the passage of oxygen through the contact lenses into your eyes due to its porous structure. Eyes will be lack of oxygen if you wear normal contact lenses and resulted in eye dryness, sometimes severe irritation and infection, or even eye pain.

This specially designed material of allowing oxygen through the contact lenses makes sure that your eyes can keep moist all through the day. So if you choose Cooper Vision soft contact lenses, the lens wouldn’t dry up and it can keep its shape. The risk of damage to the eyes caused by dried lenses is much lower than the normal contact lenses.

Thanks to its innovative design, Cooper Vision soft contact lenses are obviously at the leading place of the market of soft contact lenses.

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Contact lenses can be a more comfortable alternative to wear glasses, but they can also pose potential dangers to contact wearers. Many complications and diseases can be stimulated by wearing contact lenses. Some people complain that those conditions originate from the application of certain lens solutions, therefore, there are several contact lens solution, some of which are brands of solutions, that have been recalled; however, with extensive researches, researchers find that they have nothing to do with the solution, but the incorrect use of the solution and poor contact lens care.

Three main parts of an eye exposed to the contact lens are eyelid, conjunctiva and cornea, which are surely the most possible parts that may be infected. For example, microbial keratitis is caused by the infection of the surface of the cornea; corneal ulcers is caused by the actual invasion of the cornea and then the inner layers are destroyed and so on. As a matter of fact, most eye infections are related to bacteria attack. Some aggressive strains of bacteria, such as Pseudomonas, are able to perforate an eye overnight. Therefore, careful use of contact lenses is extremely important.

To minimize the possible eye infections, there are several contact lens using tips below that can guarantee a life-time health.

Have good hygiene while handling contacts. Wash your hands throughly, at least 10 seconds, with an anti-bacterial soap before you put them in and remove them from eyes. Your hands need washing carefully including washing nails and finger tips so as to throughly clean up possible bacterial left over.

Clean up the place where your lens case will be placed or put a clean paper towel on the counter in case of contamination of sudden drop. Do not try wearing contacts over a sink, because you contacts may drop in the right center of the nozzle and disappear. If you accidentally drop your contacts on the floor, you should put them in a complete disinfection cycle for at least 6 hours. Do to make sure the hygiene before putting them into eyes.

Rub your lenses regularly. Although most contacts solutions are advertised that with their solutions, there is no need to rub lens, the biofilm of debree and coatings that build up on your lenses are not so easy to be cleaned out. Thus, rubbing lenses regularly is of importance. In addition, if coatings on lenses are rubbed of, solutions are can act on the lens surface more efficiently. Have you noticed or not, the no rub label is disappearing on contact lens bottles and contact lens solution bottles, because there is actually no rubbing free contacts or solutions.

Rinse your lenses with solution. After rubbing the lenses, some people will neglect the rinsing step, because they argue that since lenses have been cleaned up by rubbing, the rinsing step can be eliminated. However, it is researched that inadequate rinsing is a proven cause of bacteria growth.

Place solution appropriately in case of being knocked over and contacting a countertop. It is important to close the cap on the bottle of solution, in case of potential bacteria entering the bottle. Although the solution is designed to kill bacteria, overloading bacteria, the solution will lose its capacity to kill bacteria. Moreover, everytime when you use the solution, remember to squirt out the first few drops, especially you have no used the solution for a long period of time.

Use solution that is within the expiration date.

Use eye drop carefully. For the long time exposure to the outside world, you eyes always have bacteria, therefore, when using eye drops, you should pay attention not to make the eyedrop bottle touch your eyelashes and eyelids, or while you are intending to rewet your eyes, your eyes will instead be contaminated. You may ask why, for the fact that there are so many bacteria around eyes, why do not they enter eyes. The answer is that our eyes have an natural immune system to keep them away unless you artificially allow them in.

Rinse the case regularly. Not only contact lenses are in need of rinsing, so are the cases. Clean them with solution, and then place them uncovered so as to let air dry.

Change contacts when you are told to, especially when you are using disposable lenses. If you wear contacts that are out of date, certain eye conditions, like burning eyes, red eyes, and dry eyes, etc.. will emerge.

Replace the contact lens case in a fixed period of time. It is not only necessary to replace your contacts, so is it necessary to replace your contact lens case. The ideal changing period is every one or two month. Even you are diligent to disinfect your case often, bacteria will also grow in the micro scratches, where you will feel hard to clean them out. This is why hospitals never reuses individual patients items. Therefore, to change another should be the best alternative. What’s more, contacts bottles are often free of charge.

Use brand name solutions. Solutions with improper ingredients may cause allergic reactions. It is advised choose solutions that suit your eyes best. Usually brand name solutions are more consistent, and there are large molecule preservatives that are safer and less toxic to eye tissues.

Change solutions every time you remove contacts from your eyes. There are some people who reuse the solution in their case or just keep use the solution by just adding to some new solution to it, for laziness or for frugality. The fact is that solution reused are of weak capacity to kill bacteria, therefore, use few solution is necessary.

Are you one of the millions of people who wear regular or soft contact lenses? If so, it is important you take tips listed above, so as to help promote good health and reduce your risk of infection, as well as help you see better.

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Contact lenses have many advantages that make them more and more popular, although people may feel a little difficult to insert contact lenses to your eyes or remove them for the first time which will disappear when you accustomed to them.

The most attractive advantage is that contact lenses give you aesthetic sense since you needn’t to wear glasses for eye vision correction. Nowadays, there are colored contact lenses with different sizes, so that they make your eyes look more beautiful and unique.

Contact lenses are safer than glasses. Since contact lenses are worn on the cornea of your eyes, they don’t have the risk of breaking. Thus, they wouldn’t injury your eyes. So contact lenses are more beneficial to those with high risk of breaking glasses, such as sports player and people who always work with headgear on. What’s more, some kind of contact lenses can also provide ultraviolet protection. It is also a good choice wearing contact lenses to protect eyes for patients who have undergone a cataract surgery lately.

Contact lenses provide you a broader vision than glasses. Because contact lenses directly stick to the pupil of your eyes, you can see all direction. On the other hand, if you wear glasses your vision will be limited within the borders of the frame. And the distance between your eyes and glasses will vary which may lead to the distortion of your vision. Besides, the contact lenses offer you a much more accurate vision compared to glasses.

Contact lenses are more convenient and more comfortable. You don’t have to worry about the external factors such as rain, snow, fog that make you difficult to see clearly, and also any problem of glare or reflection caused by glasses. With contact lenses there will be no marks on the nose. And contact lenses do not have any weight, so you needn’t to adjust it frequently like glasses. If you wear glasses, you need to fit it frequently, and it is difficult to see things clearly if you move your head.

Due to the above advantages, the market of contact lenses develops faster and faster.

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As for glass wearers, if it possible, they tend to choose contacts, which are almost invisible. In addition to its invisibility, they can also be used to treat some eye problems, and now there are over 100million contact wearers around the world.

Nowadays, we will discover that contacts are made from plastics, namely, PMMA and Gas Permeable Polymers. But the earliest materials of contacts are glass. Based on the possibility of letting gas through, contacts are divided into hard lenses and gas permeable lenses. Each of them has its own merits and demerits. For example, hard lenses can provide a better visual effect, but can not let gas though; while the gas permeable lenses, as its name indicates, can let gas through, with relatively weaker visual effects. Luckily, there is now a product that has integrated the merits of the two. That is called silicone hydrogels.

More attention should be paid in the keeping of contacts, for they are prone to pollution and bacteria. Contact solution is the foremost important product of cleaning contacts. And it can also provide extra moisture to the eyes. One more point should be noticed that wearers should follow the guidance and instructions of the products while using, especially the expiring date and whether they are extended wear or not.

Another reason why people choose to wear contacts is wearers will feel much more convenience in the daily lives and will not suffer from some bothering matters like wearing glasses.

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Astigmatism is a vision condition that occurs when the front surface of your eye, the cornea, is slightly irregular in shape. People with astigmatism will commonly have blurred or distorted vision or suffer from headache and eyestrain etc. Usually nearsightedness and farsightedness occur with astigmatism. In most circumstances, one does not have to cure astigmatism. If there is a necessity, kinds of ways such as having a surgery and wearing glasses can be applied.

The principle to cure astigmatism is to, if a normal cornea is compared to a baseball, reshape the cornea to one shaped like a football so as to reflect light correctly. Because when the cornea is shaped like a football there is more than one curve on the cornea, which would causes light to reflect on more than one point in the retina, resulting in blurry vision.

Correcting astigmatism by a surgery is to cut a microscopic incision in the eye and reshaping the cornea. Keratotomy and LASIK are most frequently applied. No matter which one is applied, the final aim is to reshape the cornea to be more like a baseball than a football, making the cornea more spherical.

Correcting astigmatism by wearing eyeglasses is to redirect the light to the retina through lenses. In a similar way, contact lenses work the same to redirect the light. For a long time period, only RGP (rigid gas permeable) contacts are obtainable for astigmatism people, but now toric soft lenses are also available. Both of the two ways are able to provide clear vision for the astigmatism patient. With the development of science and technology, assistances for eye problems are improved greatly. As long as you know your eye prescription and how much astigmatism you have, you are able to buy a pair of eyewear suitable to you most.

If you are an astigmatism patient and you want to cure your eye problem, just contact your optometrist and tell him detail information about you eyes. He will advise you the most effective way for your vision improvement, either surgery or glasses.

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Before 1987, only non-disposable contact lenses were available which many opticians are reluctant to prescribe today as they tend to cause more problems than disposable contacts. In 1992, tined disposables were available and became very popular. Later in 1995, daily disposables came in vogue. Now in the UK 99% of all contact lenses prescribed are disposable.

Since daily disposables need less maintenance than two-weekly and monthly disposables, they can save time to some extent. Generally, extended wear disposables are much cheaper and more durable, but they have the additional cost of accessories. People wearing contact lenses usually have problems related to dirty lenses with deposits.

With non-disposables, you need to take them out of your eyes at night, clean carefully and store the lens in a lens case. So you may wonder whether you have cleaned the lenses completely. Though the lens may be cleanable for a while and tears can protect your eye sometimes, you should pay more attention to some eye problems related to the cleaning.

With disposable contacts, you don’t need to worry about the consequences associated with non-disposables, such as the bacteria picked up by lens. The disposable lenses are also much thinner than other lenses, so that they can allow for more oxygen to pass through to the cornea, making the wearers feel much better. Bob Hughes, the general secretary of the Federation of Ophthalmic and Dispensing Opticians, says that disposable lenses make great sense to lots of people.

In a word, the occurrence of disposable lens reflects the development of lens technology. People choose this lens not only for safety and convenience reasons but also for the comfort. The popularity of disposable lenses is quite reasonable.

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Larry is a 28 years old man. For the past 22 years, he had worn eye glasses. Besides, he has eye allergies, which make his eyes be easily irritated. And since his eyes are astigmatism, it is very expense to purchase contact lenses. So he had never play competitive sports since he put on glasses which made it difficult to compete on an even level and has the risk of breaking the glasses.

When his office decided to join a softball league last summer, he couldn’t help taking part in. Unfortunately, a wayward pitch struck him right in the face during the second game and broken his glasses, which cost him four hundred dollars to replace them. The experience last year had made it left the league with a shiner, which made it impossible to continue the game.

The expensive cost last year that he had spent on repairing his glasses made it almost impossible to continue this season. However, he was so interested in softball game that he determined to continue to play this year.

Larry visited his eye doctor, and his optometrist recommended him to use astigmatism lenses, which is too expensive to Larry. Then Larry turned to the internet, and he found some discounted acuvue astigmatism lenses. He tried one which was delivered quickly to him. He found it didn’t irritate his eyes after wearing it for a few weeks. Now, he was ready for the new season of softball game.

It is a hot Wednesday night in July. It was Larry’s turn to bat. The score is 3-3. It was the last round of the seventh, the final inning of the softball games, and his team had two outs. If he made a hit, his team would win, and otherwise they would lose the game. He stepped to home plate, stood on it waiting for the pitch. Under the fluorescent buzz lights of the softball diamond, Larry felt himself like Robert Redford. The bases were loaded. Larry fouled the first pitch. He became nervous, and sweat dripped down his forehead. On the second hitting, he swung but missed. Two strikes! He heard the sound of his breathing feeling hard to lift his shoulders. The third pitch came: BAM, the baseball struck him right in the face which made him fell backwards. Will it a repeat of last season? Thanks to the astigmatism contact lenses which took the place of glasses, he won his team the game with a shiner.

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Many people think that contact lens is a relatively new invention invented in this century thanks to advanced technology and innovation. The truth is that people tried to develop contact lens many centuries ago, today’s contacts are mature ones based on the inspiration years ago.

The idea of contact lenses can date back to Leonardo Da Vinci. In the 16th century, Leonardo Da Vinci described the way of submerging the eye in a bowl of water, but he did not suggest his idea be used for correcting vision. Over 100 years later, Rene Descartes developed the idea of a glass tube filled with liquid that would correct visual problems, but it was impractical. Thomas Young developed Descartes’ idea 170 years later and produced what has been considered the predecessor to the contact lens. However, it would be in 1887 that a German glassblower developed a real sense of contact lens that could be seen through and tolerated. In 1888, the German physiologist Adolf Eugen Fick made glass contact lens and could be worn for a few hours at a time. After this, people realized the value of contact lenses, and the whole world requested for improved designs.

In the 1900s an American optometrist introduced the plastic “corneal” contact lens and produced a more practical contact lens. This meant a great step in the advancement of contact lens. People did not suffer pains from glass contacts from then on. The contact industry and technology became more and more mature. By the 1960s Otto Wichterle and Drahoslav Lim created a soft contact lens of a water absorbing plastic. These lenses were soon used more often than rigid lenses, mainly due to the immediate comfort of soft lenses. This development is a principal breakthrough and inspires the majority of soft contacts today. In the 1970s this lens was available to patients in the United States and contact lenses provided to patients with astigmatism were also available.

The 1980s is an important landmark to the improvements of contact lenses. New options are more and more. The general public is able to wear soft colored contacts as well as extended wear lenses. Also, RGP lenses were invented; bifocal lenses could be found onto the market. And fortunately enough, for all lens wearers, the demand of multipurpose lens care solution was satisfied. The technology of contact lenses became mature gradually and in the 1990s there were more innovations and lens wearers could choose the one that suits him best from various options.

In short, there is not only one inventor of the contact lens, but rather cooperation among many people over many centuries. After centuries of experiment by those inventors, today’s contact lenses are pretty good in terms of technology and quality.

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Everyone should have an experience to feel unwell when some foreign matter falls in eyes, while contact lenses that rest on cornea not only don’t make one’s eyes tearing, but also provide a clear vision for people with eyesight problems. Why? How can contact lenses be possible to work on eyesight problems?

This is because contact lenses rest on cornea atop a constant supply of tears with the pressure exerted from the eyelids. With every blink, the contact lenses will move slightly, making tears underneath to flush out keeping eyes moisten. Moreover, in the same way, the trash or debris that may accumulate in eyes will be flushed out from eyes.

As for how can those tiny lenses correct vision, attentions should be paid on its working principles. All contact lenses, applying special materials and high technology, redirect light to the retina so as to make retina focus light. Because for those who suffer from eyesight problems, no matter the nearsightedness, farsightedness, astigmatism or presbyopia, their retinas can not function properly which causes blurry vision.

However, as for different eye conditions, contact lenses are made differently. Contact lenses for the nearsightedness, or say the myopia, are thinner in the middle while thicker on the edges, which redirect light to be processed correctly by the retina; contact lenses for the astigmatism need to be custom made. Before an astigmatic patient is preparing to buy contact lenses, he should go to an optometrist in advance and ask doctor to measure the cornea by which way a pair of precise contact lenses, both increasing eye health and providing a perfect vision, and which suit you the most can be made; contact lenses for the farsightedness are, opposite to those for the shortsightedness, thicker in the middle and thinner on the edges. This design allows the light rays to be processed correctly by the retina.

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