Disposabel Contact Lenses Part 2
Convenience is a huge factor in disposables, not surprisingly. Daily insertion and removal still requires cleaning, sterilizing and regular placement of the lens. While many contact lense wearers establish a routine, others find the practice something they would prefer to avoid. Disposables offer that option. Some are designed to be worn once and then just tossed. Many types of extended wear disposables can stay in overnight, or a week, or even up to a month.
Cost is a factor to consider and it's not always negligible. While prices vary over time, disposables are typically more expensive over the long run. You pay for the convenience. But the daily costs are lower, since the lens is intended to be used only for a short period.
Still, many sports enthusiasts enjoy disposable lenses thanks to their tight fit, which results in them being very hard to knock loose. And if the quality is good enough for them, it will probably be good enough for most everyone.
Posted by contactlense at 8:09 AM 1 comment:
Labels: cheap contact lens, contact lense, contacts lenses, discount contact lens, health, vision
Disposable Contact Lense
Disposable contacts were first introduced in 1987. Since then they have become one of the most popular options for contact lense wearers. They're comfortable, safe and come in a variety of different types.
Disposables are designed to be worn and discarded either daily, weekly, bi-weekly or monthly. But it's important to keep in mind a distinction, that between the replacement schedule and the wear schedule. Some are designed to be worn daily and discarded daily. But some that are labeled dailies are removed daily, cleaned and stored, then reused up to their intended lifetime. That lifetime can be one week, two weeks, or even as long as a month. Make sure you note which is which when you choose your lenses.
The more often you change your prescription contact lenses the lower the odds of health problems. Even the best of contacts reduce the amount of oxygen that gets to the surface of the cornea. That ups the chances of infection. Longer wear cycles also increase the odds of corneal abrasion, conjunctivitis and other eye health issues.
However, changing lenses more frequently can increase the odds of introducing other kinds of health problems. For example, some preservative solutions can cause an allergic reaction to some contact lens users. Wearing a pair of disposables continuously for a week, then simply throwing them away, eliminates that possibility. They come packaged in a sterile solution, so they never need to be cleaned unless they're removed and re-inserted.
Posted by contactlense at 8:17 AM No comments:
Labels: cheap contact lens, cheap contacts, contact lense, discount contact lens, health, prescription contact lenses
Contemporary contact lenses are comfortable, long-lasting (unless by design, as in disposables) and very safe. Yet, there are some risks and limitations in wearing them and knowing what those are can help you choose the type that’s best for you. Of course, any such decision should be made in consultation with your eye care professional.
Since 1986 many have opted for Rigid Gas Permeable contact lenses. Modern designs allow for up to five times more oxygen diffusion through the plastic than those of the past. That feature is important in minimizing the odds of corneal infection. The less oxygen that makes it to the eye, the higher the odds of an infection.
On the downside, RGP lenses are a little less flexible than other types, making them less comfortable for some. But, they may be better for correcting astigmatism as a result. They also can last up to 2-3 years, which is longer than typical soft contact lenses.
Hydrocurve III (Toric) Contact Lenses
Posted by contactlense at 3:07 PM No comments:
Labels: contact lense, contact lenses, contacts lenses, health, vision
CLICK HERE For A Full Lens Catalog And Save Up To 70% On Contact Lenses
Knowledge can give you a real advantage. To make sure you're fully informed about contact lense , keep reading.
The contact lenses themselves can cause problems if they change shape. While rare, previously well-fitting contact lenses can be affected by temperature and age, causing tears and oxygen to less efficiently make it to the eye. This so-called Tight Lens Condition can cause pain, redness and even swelling of the cornea. Correction consists of remeasuring the eye and fitting new contacts after the eyes have recovered.
The cornea itself can change shape, as can the whole eyeball. The change is subtle, but with contact lenses the tolerances are small. If corneal warpage (as it's called) does happen the result can be discomfort and an increase in the odds of infection. The condition is more common with gas permeable and hard lenses, which are less flexible than soft contact lenses.
If this happens, healing can take weeks or months, during which time contact lenses can't be worn. As the eye resumes its normal shape, vision can change. More than one glasses prescription may be required for optimal sight. In rare cases the astigmatism is permanent.
In all cases, following the manufacturer's and your eye care professional's guidance about cleaning, insertion and removal, contact lens care and wear are your best bet to avoiding problems.
Of course, it's impossible to put everything about contact lense into just one article. But you can't deny that you've just added to your understanding about contact lense, and that's time well spent.
Sometimes it's tough to sort out all the details related to this subject, but I'm positive you'll have no trouble making sense of the information presented above.
Labels: bausch lomb, contact lense, contact lenses, eye care, health, life, vision
Contact Lense - How The Eye Works
An ordinary glass lens, such as a magnifying glass, focuses the light that moves through it by bending the rays toward a focal point. That's the bright spot you see when you hold one over a newspaper, for example. Something similar happens when light enters the eye through an opening called the pupil, behind a clear protective portion called the cornea.
But there's an important difference between a magnifying glass and the eye. The magnifying glass's focal point is fixed. The eye, by contrast, contains muscles that help shape the lens and that shaping process performs a number of important tasks. Most importantly, it makes it possible for the focal point to change.
When those focused light rays hit the cells chemical reactions occur that stimulate the optic nerve attached to the back of the retina to produce electrical impulses. Those impulses are then transmitted to the visual cortex, the part of the brain that organizes them. Many parts of the brain cooperate to cause the mind to conclude: 'Ah, a car.' But the visual cortex does the initial heavy lifting.
Labels: bausch lomb, contact lense, contact lenses, health, life, vision
Get the My Contact Lense widget and many other great free widgets at Widgetbox!
My Contact Lense
Today there are more healthful and convenient contact lens options than ever before. If you’re thinking about contacts, our contact lens basics article is the place to start. We help you find the best and cheapest contact lenses available on the internet