Bifocal Contact Lenses ? Tell Me More
As we get older our eye can suffer from Presbyopia, this can occur when our eyes are unable to focus incoming light due to the loss and flexibility in our eye muscles. The unfortunate result is that trying to read close-up such as reading a book or newspaper or even trying to use computer screens can become blurred.Bifocal contact lenses add an extra layer of near vision correction to the actually lens give you the power to focus and see object's close-up. There is usually a far-vision layer also.There are three different types of bifocal contact lens designs.
- Alternating
- Concentric
- Simultaneous
If you have small pupils this arrangement can be reversed this would put the far vision layer in the centre and near vision on the outer ring.In Simultaneous bifocal lenses both layers are in the centre of the lens, this may seem strange but your eyes learn to adapt to each correction layer. This of course may take a little time but you're eye care specialist can advice more on this.Some people may find it difficult to get used to bifocal contact lenses, if you have adapted to bifocal, trifocal, or progressive eyeglass lenses, you'll already understand the basics of using translating bifocal contact lenses, in which the distance zone is straight ahead and above center, while the reading zone is lower. With simultaneous designs, your eyes will learn to focus near or far as needed. Whatever your particular lenses design, your eye-care specialised will make sure you understand how to use it.Bifocal contact lenses come in soft and rigid gas permeable (RGP). In general soft contact lenses can become cloudy with protein deposits over time, they have also been known to be easy to tear.Gas permeable contact lenses are more durable and made from a stronger plastic that stays clearer over time.
When you have RGP bifocals they last longer but you may need new ones only when your presbyopia progresses so that you need a stronger near vision prescription.(c) www.2020-contact-lenses.comReprint Rights feel free to publish this article on your website but you must agree to leave all active links contained within 'About The Author' intact and "as is" and NOT hidden behind a java or redirect script..
Martin Smith is a successful freelance writer providing advice for consumers on purchasing a variety of products which includes Bifocal Contact Lenses and Contact Lenses, and more! His numerous articles provide a wonderfully researched resource of interesting and relevant information. Visit http://www.2020-contact-lenses.com.Bifocal and Toric Contact Lenses Offer More Options for All Eyes
Two of the most common contact lens prescriptions prescribed for people today are for the eye conditions of presbyopia and astigmatism. Modern technology has made bifocal and toric contact lens designs available in both the rigid gas permeable (RGP) lenses and the soft lenses, offering more options and wear schedules then ever before.
Only a small percentage of people prefer the rigid gas permeable lenses to the soft contacts. The reason being that the RGP lenses retain their shape over the cornea more successfully than do the soft lenses, and are said to provide crisper vision to people with the eye condition astigmatism. However the majority of people prefer the soft lenses as they come in more choices and take less time to adjust.
Presbyopia is a condition that occurs as the eye's lens grows older and starts to lose some of its elasticity, which is needed to switch focus between viewing near and far objects. About one hundred million Americans...
Contact lenses > Bifocal and Toric Contact Lenses Offer More Options for All Eyes
Choosing contact lenses
Many people are switching to the freedom and convenience of contact lenses. If you're thinking of switching from glasses to contact lenses, here are often several questions to ask:
Question: Why would I want to switch from glasses to contact lenses?
Contact lenses can be a lot more work than glasses because they require to be cleaned and disinfected periodically. However, contact lenses allow you to wear sunglasses, if you want. They are also ideal for people who want to play sports but whose glasses could potentially be damaged during play.
Question: What kind of contact lenses are there?
There are different kinds of contact lenses. You can choose soft contact lenses or hard contact lenses.
Hard contact lenses need to be worn regularly in order to keep your eyes used to the shape and feel of the lens. But you can't wear hard lenses for too long at one time because some hard lenses are non-permeable and do not allow oxygen...
Choosing contact lenses
Contact lenses > Choosing contact lenses
Wearing Contact Lenses
If you've never worn contact lenses, you may not appreciate the amazing selection available on today's market. Be glad: you have much more choice than in the past. With so many options, how do you choose the right type of contact lenses?
Your doctor can probably help you figure out which contact lenses are best for you. Some contact lenses are suited to certain vision problems, like astigmatism. Others, like extended-wear contact lenses, are marketed to suit certain lifestyles.
Colored contact lenses sometimes are used by people who don't even need prescription lenses but just want to change their eye color. Regardless, contact lenses should only be purchased by a professional eyecare practitioner, who knows how to properly fit the lenses and help you take care of your eyes. In fact, in the United States, it is illegal to purchase contact lenses without a valid prescription.
It's good to be informed about the different types of contact lenses before...
Contact lenses > Wearing Contact Lenses
Contact Lenses A Better Vision Option
There are over 34 million contact wearers in America. The idea of contact lenses has been around for hundreds of years. It is said that the first person to conceptualize the idea of contact lenses was Leonardo da Vinci in the early 1500's. It wasn't until 1971 that soft contact lenses entered the market, followed by GP or gas permeable contact lenses in 1978. Extended wear contacts received FDA approval in 1981 and disposable contacts were introduced in 1987.Today's contact lenses do more than improve vision.
Some contacts are specifically manufactured to change eye color only. With dozens of different colors available some contact lens wearers change their eye color slightly, and some go for a totally different look, such as brown eye to green or blue eye to brown. There are contacts that have special effect lenses that produce effects on the eye such as jaguar and zebra stripes, a yellow cat eye with a vertical pupil, black spiral, stars & stripes and fire. The FDA considers...
Contact Lenses A Better Vision Option
Contact lenses > Contact Lenses A Better Vision Option