Posts Tagged ‘vision’
A pair of eyeglasses is normally consisted of two lenses and a frame. Rimless eyeglasses still have two temples and a bridge used to connect the lenses. It is commonly known that eyeglass lenses are the critical section for the wearers to get normal vision. From a brief perspective, eyeglass lenses have prescription ones and non-prescription ones. While the first category is the majority in the market, the latter one is still popularly used. Non-prescription eyeglass lenses are sometimes called plain lenses, meaning they are not for vision correction. Dissimilar to prescription eyeglass lenses either concave or convex, non-prescription lenses are plain. These plain-surfaced eyeglasses lenses are used simply for fashion or eye protection. Utilizing plain lenses, there are regular sunglasses and protective goggles. These plain eyeglass lenses have long been existent for many years and will continue to stay in the market.
The other main category is prescription eyeglasses used for vision correction. They can either be convex or concave. The former type is capable of correcting hyperopia and the latter type is for myopia. These two types of non-plain eyeglass lenses help the nearsighted or farsighted eyes focus light entering the eyes properly. Even if there are popular contact lenses and eye surgical treatments, prescription eyeglasses have remained as an indispensable solution for many individuals. Using prescription eyeglass lenses is actually the simplest method. Compared with plain lenses, convex or concave eyeglass lenses are more complex and expensive.
Within the prescription lenses, there are still sub-categories, including single vision lenses and multifocal lenses. Suggested by the name, single vision eyeglasses are able to deal with only one vision problem. Regular prescription eyeglasses fall into this category. Until now, single vision spectacles have been the major role in the market. Individuals with nearsightedness or farsightedness are main participants of those single vision glasses. In addition, there are still multifocal eyeglass lenses, containing bifocals, trifocals and progressive ones. These eyeglass lenses are mainly for folks with presbyopia, who are still suffered by nearsightedness. It is easy to understand that multifocal eyeglass lenses can resolve more than one vision problem at the same time.
In fact, there are still many other aspects of eyeglass lenses, in addition to lens power or powers. Lenses for fashion can be applied with different colors. For extra lens feature or property, there are available various coatings. From a basic viewing point, eyeglass lenses can be made from glass or plastics.
Firmoo.com is the emerging online eyeglasses store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo’s return and refund policy makes any purchase risk-free ones.
Article Source:http://www.articlesbase.com/vision-articles/many-aspects-of-eyeglass-lenses-1753502.html
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If you are having difficulty in reading then you might be suffering from presbyopia. This fairly common vision disorder usually occurs with advancing years, in the patients’ 40s. Presbyopia is caused by the thickening and hardening of the lens of the eye.
Diagnosing the Need for Surgical Reversal of Presbyopia
Since Presbyopia is an age-related disease, it is nothing to get alarmed about. Try and see if you have all the symptoms and visit an ophthalmologist to decide the best method for surgical reversal of Presbyopia. You might need to go for presbyopia treatments if you:
* can’t read small print
* need to keep the material farther away to read it
* suffer eyestrain in reading
* can’t easily see the contrasts between small bits of texts
* ed increased light while doing reading or other works needing close look at objects
Types of Presbyopia Treatments
There are many Presbyopia treatments through which surgical reversal can be achieved. These include:
* Glasses: The use of corrective eye glasses, particularly progressive or bifocal lenses while reading is a common method of vision correction in this case. Single vision or focus glasses are usually prescribed just for the purpose of reading. These glasses will not help you see things across the room the way bifocals can.
* Contact Lenses: Some people prefer wearing contact lenses instead of corrective eye glasses due to their convenience. Interestingly, more and more people are opting for a ‘monovison’ setup where in one lens has correction for near sight while the other has correction for far sight. With both eyes open, vision is generally clear.
* Surgical Treatment: This is a permanent solution for presbyopia. These days, laser techniques such as Lasik are also used for surgical reversal of presbyopia.
Method of Surgical Reversal of Presbyopia
Lasik is the most common of all presbyopia treatments. In this method an incision is made and a flap is created in the cornea with the help of a surgical blade. Then laser is applied to remove the targeted tissue of the cornea to reshape it. The whole process takes just a few minutes and is quite painless.
If you are worried about your failing eyesight, you can consult the eye specialists at the Laser Eye Center of Silicon Valley. The center has the most modern equipment and one of the best treatment success rates in the state of California.
Laser Eye Center of Silicon Valley performs surgical reversal of presbyopia treatments that include laser presbyopia reversal, anterior cilliary sclerotomy and refractive lens exchange.
Article Source:http://www.articlesbase.com/vision-articles/surgical-reversal-of-presbyopia-1748320.html
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Astigmatism is a very common vision condition which is faced by most people. Most people think it is not a serious vision problem. At certain level, astigmatism has no impacts on vision and does not need special treatment. However, when astigmatism results in distorted or blurred vision, eye discomfort and headaches, astigmatism correction is needed.
What is astigmatism? Astigmatism is a kind of vision disorders (usually blurred vision) caused by distortions in the curved shape of the front surface of the eye (cornea) and/or the curvature of the lens inside the eye. It can also be caused by years of stress and strain on the eyes. The strain on the eyes can weaken the tiny muscles around the eyes. Problems appear when the eyes need to change shape of cornea or lens. An irregular shape of cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye. As a result, vision becomes blurred at any distance.
Astigmatism usually comes together with other vision problems like nearsightedness (myopia) and farsightedness (hyperopia). All of these vision conditions are called refractive errors because they influence how the eyes bend or “refract” light. Now the question is how we can do the astigmatism correction when we have these errors. Below are just a few tips which you can do to heal astigmatism.
You can use a pendulum for astigmatism correction. You just lie on the floor and swing the pendulum over your head. Try to follow and focus on direction where the pendulum moves. This exercise can keep your eyes focused on one object. If you keep doing this exercise, your eyes will have better capability in focusing on a certain object.
When you feel your eyes are tired, you should take a break. Spend a few minutes to relax your eyes. During the break you can have eye exercise by moving your eyes around. You can also look at the yard or green grass outside. Keep your eyes away from your computer monitor if you work with a computer. Relaxation can release the tense of tiny muscles on your eyes. After the relaxation you will recover your vision.
Another treatment for astigmatism is called Orthokeratology (ortho-k). This treatment uses a series of specially designed rigid contact lenses to slowly reshape the curvature of the cornea. What is good about this treatment is that it is painless.
Eye surgery is also another option for treating astigmatism. The surgery usually uses laser. The purpose of the surgery is to reshape the cornea by removing a small part of eye tissue.
Mario Santos has been working as an eye wellness expert for years and has helped people who have vision problems.
For further information, please visit //www.eyevisionimprovement.com/and find out some natural ways to restore eyesight.
Article Source:http://www.articlesbase.com/vision-articles/astigmatism-correction-how-to-get-rid-of-astigmatism-1740997.html
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Ensuring we are in good health means different things to different people. Of course, if we have a cold, flu or other illness we seek medical help as the symptoms are apparent.
However, many people may be unaware of the health of their eyes and may not realise that eye examinations are an effective way to pick up any problems within the eye that may cause damage to a person’s sight further down the line.
Whether you currently wear glasses or feel your eye sight is deteriorating, there are opticians Cheltenham that offer help and advice on the best glasses and alternative eye wear to improve your vision. They advise that eye examinations should be undergone on an annual basis to ensure that optical health remains at a maximum.
Whether you reside in the Cheltenham, Gloucester or Worcester area, eye examinations are available by professional opticians using only the highest quality equipment to ensure a thorough check is undertaken. Starting with preliminary checks, specialist opticians Cheltenham examine the eye internally and externally using instruments that can reveal health problems that may be on the horizon.
With so many different illnesses that can be spotted just from eye examinations, it’s vital that they are caught at the early stages. Opticians in Cheltenham have various tests to ensure that you are provided with the right lenses for your vision and discuss glasses or lenses with you.
It’s vital people don’t neglect their eyesight due to the complications that can derive from ignoring blurred vision, headaches and other symptoms. Treatment can be diagnosed after a simple eye examination and with eye sight being irreparable it’s worth taking the time to do so.
With glasses available in a variety of ranges and even the option of contact lenses, there are so many options to fit in with your lifestyle.
Written by Jenny Pilley, Content Writer for Creare, specialists in SEO
Article Source:http://www.articlesbase.com/vision-articles/eye-examinations-from-specialist-opticians-cheltenham-1728832.html
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As the age increasing, our sights are inevitably getting worse. Normally, when people are 50 years old, some people may be a little younger, people’s vision begin to deteriorate. But now we find that lutein enriched multi-vitamins are helpful to defer people’s vision deterioration.
The aged-related macular degeneration or AMD for short is the main condition in this piece. AMD make a vision loss in the central retina. The reasons cause AMD are complex, but some reasons can be certain that eyes expose in the UV light for long time can make this problem. And a change in the concentration of the macular pigment that compound lutein and zeaxanthin are also believed to make AMD happen.
We can not stop getting old so that our sights are inevitably getting worse, but we can take some measures to delay or minimize the onset of AMD, some tips are as follows: try to manage your blood and avoid getting hypertension; control the cholesterol in a low level; avoid over weighted; do not have too much fat; and do not smoke. The smokers get the risk of AMD higher by two or three times than the normal people.
What is the most important, the more you intake of lutein, the less risk you take AMD, because its cousin compound zeaxanthin will help mitigate AMD. Enough macular pigment compounds are important in eyes health. People can get lutein from the foods such as Brussels sprouts, swiss chard, garden peas, corn, zucchini, broccoli, romaine lettuce, collard greens, turnip greens and kale.
When people get intake some kind of lutein enriched food that whether they get the proper amount of the nutrients is unknown, because it is a big molecule and it dissolves in organic solvents. So if people want to get recommended amount of lutein, they had better drink some kind of oil to help the lutein to get absorbed.
Another way to get proper lutein is to get lutein enriched multi-vitamins. People can easily get the quantity of the recommended nutrient. What is more, some good ones also comes with zeaxanthin which can make lutein have greater effectiveness. Also, they are more convenient.
Some good multi-vitamins also contain some other ingredients; some kind of ones may have about 100 ingredients. Also, accord to different requirements they can be made in different types. For instance, they can be tailored to respectively suit men and women. And good multi-vitamins also include some other good things.
more info
·Lutein and zeaxanthin for healthy eyes
Firmoo.com is the emerging online optical store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo’s return and refund policy makes any purchase risk-free ones.
Article Source:http://www.articlesbase.com/vision-articles/lutein-is-helpful-to-your-vision-1726719.html