by: Martin Smith
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
In Alternating or translating bifocal lenses, the near and far connective layers of the lens are distinct from each other. The near correction layer is usually placed at the bottom of the lens but if needed can be reversed. The intermediate layer can also be added and changed.
In concentric bifocal lenses the near and far layers are arranged in rings, the near vision is in the centre and the far vision layer on the outer ring. 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.
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About The Author
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.
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Using Costume Contacts
Using Costume Contacts
by: Amanda Baker
Looking for a change from your regular contacts?
Want an option that will really have people talking?
Costume contacts aren?t just available to movie costume designers anymore.
Now even you can have eyes that look alien, or cat-like, or whatever you desire.
Thought many people think of purchasing costume contacts only to match their Halloween costumes, you can actually wear costume contact lenses to just about anywhere you can wear regular contacts!
There are many costume contact lenses out there that are affordable and comfortable.
However, buyers should keep in mind that some lenses use a toxic paint that can cause eye irritation.
You should always go with lenses made from a major contact lens manufacturer.
If you want a contact lens that will really make you stand out, try scleral contacts.
Unlike other lenses, scleral lenses...
Contact lenses > Using Costume Contacts
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
by: Steve Cogger
Two things that never used to go together are contact lenses and dry eyes. It used to be that having dry eyes meant, in simple words, inability to wear contact lenses. Today things are different, contact lenses and dry eyes can and do go very well together.
Having dry eyes simply means that you may have to evaluate a variety of lenses before finding the right kind for you. A qualified contact lens fitter should be able to find a specific lens that will work well for most any eye, even dry eyes.
Soft contact lens manufacturers such as CooperVision and Vistakon have developed materials that are designed specifically to stay hydrated while on a dry eye. Lenses such as the Proclear Compatibles, Acuvue Oasys, Extreme H2O, and Purevision work wonders in a dry eye environment. Each lens is made from a unique proprietary plastic that retains water content, hydration, and/or...
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
Contact lenses > Contact Lens Wear Is A Possibility if You Have Dry Eyes!
NXT Unbreakable Sun Lenses
NXT Unbreakable Sun Lenses
by: Benjamin W J Teo
Before the creation of NXT, optical lenses such as sunglasses were not impact resistance. And could cause serious injury to your eyes if the lenses were to crack or shatter.
Now with a breakthrough in technology, there is a universal solution for the optical market. NXT is made of soft, flexialbe and comes with a shatterproof guarantee. It protects the eyes from impacts, cuts, scratches, chemical and atmospheric agents.
?NXT is the greatest innovation in the past 40 years in the field of unbreakable transparent optical polymers.?
What is NXT made of?
The patented NXT technology was originally developed by Simula Technologies in the early 1990?s
but only for military use. The military need a material that was: transparent, lightweight and bullet proof and more superior than Polycarbonate.
In 1996 Simula Technologies partnered further develop this material and called...
NXT Unbreakable Sun Lenses
Contact lenses > NXT Unbreakable Sun Lenses
Binocular Maintenance Tips - 101
Binocular Maintenance Tips - 101
by: Lu Otico
If you?re deciding to buy a brand new pair of binoculars in the near future not only do you need to learn what kind of binoculars will suit you best but you also should know the proper binocular maintenance to keep your optics working well for years to come.
Just because your binoculars are made of durable high quality materials and craftsmanship doesn?t mean you should abuse them.
A good place to start with is the accessories associated with binoculars.
Most commonly, the binocular strap, it should always maintain around your neck as a high percentage of damage is caused when binoculars are dropped and banged up.
Make sure the clips and locking devices are securely fastened, as you don?t want to assume and end up with an accident.
If you are physically participating in any activity that could cause your binoculars to get caught or trapped in something, be sure...
Contact lenses > Binocular Maintenance Tips - 101
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
by: Steve Cogger
Two things that never used to go together are contact lenses and dry eyes. It used to be that having dry eyes meant, in simple words, inability to wear contact lenses. Today things are different, contact lenses and dry eyes can and do go very well together.
Having dry eyes simply means that you may have to evaluate a variety of lenses before finding the right kind for you. A qualified contact lens fitter should be able to find a specific lens that will work well for most any eye, even dry eyes.
Soft contact lens manufacturers such as CooperVision and Vistakon have developed materials that are designed specifically to stay hydrated while on a dry eye. Lenses such as the Proclear Compatibles, Acuvue Oasys, Extreme H2O, and Purevision work wonders in a dry eye environment. Each lens is made from a unique proprietary plastic that retains water content, hydration, and/or...
Contact Lens Wear Is A Possibility if You Have Dry Eyes!
Contact lenses > Contact Lens Wear Is A Possibility if You Have Dry Eyes!
Printers: What Really Happens When You Hit ?Print?
Printers: What Really Happens When You Hit ?Print?
by: Bill Smith
You just poured hours upon hours into a lengthy research paper. All that?s left to do is print it out. And that?s the easy part, right? Sure looks easy from the user perspective, but it?s actually quite complicated. A series of critical processes kick off as soon as you kit the OK button.
The first thing that happens is your software application (MS Word, Excel, etc) sends the data you want...
Contact lenses
Contact lenses > Printers: What Really Happens When You Hit ?Print?
How To Choose The Perfect Retailer For Your Log Furniture
How To Choose The Perfect Retailer For Your Log Furniture
by: Joseph Lapointe
The great thing about looking for a retailer or manufacturer of rustic log furniture is there are plenty of sellers out there these days, especially with the age of the world wide web. Since the birth of the internet everyone and there brother seem to have tried to start making and selling all types of rustic furniture online, but what I am sure that they found out is that making log...
How To Choose The Perfect Retailer For Your Log Furniture furniture Contact lenses
Contact lenses > How To Choose The Perfect Retailer For Your Log Furniture
Cheap Faux Wood Blinds - An Alternative to Wooden Blinds?
Cheap Faux Wood Blinds - An Alternative to Wooden Blinds?
by: Rene Knops
A cheaper alternative to wooden blinds are Faux Wood blinds. They look like wooden blinds but differ from them for obvious reasons. Cheap faux wood blinds are made of vinyl or a combination of wood and vinyl. They are becoming very popular.
These cheap faux wood blinds are nearly fifteen percent cheaper than wooden blinds. Still they provide the look and feel of wooden blinds. ...
Contact lenses Bifocal Contact Lenses ? Tell Me More Cheap Faux Wood Blinds - An Alternative to Wooden Blinds?
Contact lenses > Cheap Faux Wood Blinds - An Alternative to Wooden Blinds?
Five Family Friendly Vacations Ideas and How To Make Them Affordable
Five Family Friendly Vacations Ideas and How To Make Them Affordable
by: Patricia Kopp
Does the cost of travel have you wondering whether or not you can afford to take your family on a vacation this year? Your much needed and well deserved vacation should be a priority in your life and we are providing ways to make your family vacation time more affordable and more enjoyable.
1. Kids and Cruises ?Traveling by ship is a way for families to visit several...
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Contact lenses > Five Family Friendly Vacations Ideas and How To Make Them Affordable
Boat Insurance
Boat Insurance
by: Jakob Jelling
Boat insurance will protect your boat against natural disasters.
If you own a boat, then you should probably see about getting it insured just as you would with any other motor vehicle. After all, there are many situations that could go wrong with your boat, and you should make sure that you are ready for any of them. Boat insurance will go a long way toward that. If you are looking for boat insurance, you can either get...
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Contact lenses > Boat Insurance
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