by: Martin Smith
For year?s people who had both nearsightedness and farsightedness had to suffer with eyeglasses that had thick lenses with a line across them. Not only were the glasses heavy but the frames for glasses in general were to say the least, unattractive. The other problem with the bifocal lenses was adjusting to them. You either have to look up or look down especially going downstairs. People often experience dizziness while adapting to the bifocal lenses.
For years people who needed bifocal lenses had only one choice, eyeglasses. Even when contact lenses came on the market, bifocals still could only be had in eyeglasses. That was then and this is now. Now contact lenses offer as many choices if not more choices than for those who wear eyeglasses. Now to the joy of many, there are bifocal contact lenses available. Bifocal contact lenses are available in soft, rigid, gas permeable materials.
Who needs to use bifocal lenses? People who have trouble focusing on objects that are near. They suffer with something called Presbyopia. This doesn?t usually develop after age 40.
There are various types of lenses and they are described below.
- Alternating design- these are similar to bifocal glasses, half the lens has distance powers and the other half has powers for near objects.
- Simultaneous Design-these lenses try to blend the powers of both distant and near sight prescriptions, they fill in the pupil area. Your eyes adapt and learn to interpret the circle power choice depending on how close or far you are looking.
- Concentric Design-These are the radial of contact lenses. The lens works on near vision while outer part works on distant vision correction or vice versa.
- Translating Design- these are also very similar to bifocal eyeglasses, the distance correction is above the near correction. A line separates the lenses. The lens is flat on the bottom to keep it from moving around in your eye when you blink.
- Asferic Design-Distant and near vision are located at the center of the lens. Near correction is at the center while distance correction surrounds it. They can be reversed in some situations. The doctor will help you decide that.
- Mono-vision Design-You wear one power lens in one eye and the other in the other eye. Distance vision is usually worn in the dominant eye. Again your doctor will be able to determine this with an examination.
There are also simultaneous vision contact lenses. These lenses allow the eyes to focus on both near and far objects at the same time. Near and distant correction is in concentric rings. Since the distant and near parts of the lens are in sight all the time light from both distant and near objects can be focused on at the same time.
There is a problem with simultaneous vision lenses. While the eye is seeing through the lens some light from distant objects will go through the near vision, and the light from near objects will go through the distant part of the lens. The eye takes both in focus and out of focus at the same time. It is up to the brain to figure out which is the desired image.
Contact lenses whether bifocal or not can only be obtained with a prescription. Through a comprehensive examination your eye doctor will determine whether you are a candidate for bifocal contact lenses and what specific type might be right for you. As with any contact lens there is an adjustment period and it might take more than one try before you get lenses that are the right fit and comfortable for you.
The reality though is that bifocal contact lenses may not be for you, at least in the contact lenses that are now available. Don?t give up. If you really want contact lenses and you need bifocals, do your research and keep up to date on the types of lenses available for you.
If you want to try contact lenses some companies have free trial periods of up to a week for you to try the lenses and see how you like them. There are resources available online, through your eye care physician, and in some cases right from the manufacturer. There are discount contact lens sites and some manufacturers offer coupons to you for trying them out. Your budget will undoubtedly play a part in your decision about bifocal contact lenses.
Ask friends or family members who have contact lenses what their experience has been like for them. Of course, not everyone has the same experience but in general, the information could help you and your physician make a determination.
Bifocal contact lenses are available for people with astigmatism. Toric contact lenses in particular come in both colors and disposable types. Consult with your eye care professional, as some professionals are not comfortable with fitting Toric lenses.
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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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Golf?s Most Important Rule! ? Golf Ball Contact
Golf?s Most Important Rule! ? Golf Ball Contact
by: John Bolt
Ever wonder how to get that great distance and control on the course? It all has to do with golf ball contact. Everything depends on how and when you hit the golf ball, and you?ll see it in your results.
Hit Down to Get the Ball Up:
This may sound a little bit crazy to some but, with every club except the driver and putter you should be striking the ball with a slightly downward blow. What this does is, it allows the loft of the club to work as it?s supposed to and launch the ball up into the air. Proper golf ball contact will also increase distance because when the ball is hit at impact, the descending movement compresses the ball witch in turn releases more energy sending the ball further.
There is a common mistake made by beginners. What they tend to do is try to scoop the ball and help it into the air with their fairway woods and irons. This is a critical mistake because...
Golf?s Most Important Rule! ? Golf Ball Contact
Contact lenses > Golf?s Most Important Rule! ? Golf Ball Contact
FDA Approves Lasik Eye Surgery
FDA Approves Lasik Eye Surgery
by: Ron King
The Food and Drug Administration (FDA) approved a new custom lasik procedure in September of 2005. This new procedure can now treat many patients who were previously ineligible for the surgery.
Nearsightedness
Nearsightedness occurs when the eye is too long and light rays focus in front of the retina, instead of focusing on the retina. Some of the symptoms of nearsightedness are blurred distant vision, eyestrain, and squinting, along with having a difficult time seeing at night.
Although nearsightedness can be easily fixed with glasses or contact lenses (when not too severe), many people don't like to hassle with either one. With this new lasik procedure, folks will now be able to have pure vision.
Astigmatism
Astigmatism is the effect of the eye being shaped like a football, instead of round like a baseball. This deformity -- where the light rays focus on two points on the...
FDA Approves Lasik Eye Surgery
Contact lenses > FDA Approves Lasik Eye Surgery
First Contact: The Source of Customer Loyalty
First Contact: The Source of Customer Loyalty
by: Leanne Hoagland-Smith
With customers being smarter, more cost conscious, more product knowledgeable and more demanding, improving customer service has become a major focus within many businesses.
In Customer Satisfaction is Worthless; Customer Loyalty is Priceless, author Jeffrey Gitomer contends the real solution is shifting the paradigm away from customer service to customer loyalty.
This may be the first step, but the next step is to shift the focus away from loyal customers to loyal employees.
By recognizing the significance that the ?first contact? a customer has is with the employees. The foundation for a loyal relationship begins with the employee.
In retail and many service businesses, employees experience a short training session usually 16 hours or less.
The time is spent viewing required legal videotapes, completing paperwork and learning the basic...
Contact lenses > First Contact: The Source of Customer Loyalty
Clear Natural Vision Is Just One Of The Possible Benefits of LASIK Eye Surgery
Clear Natural Vision Is Just One Of The Possible Benefits of LASIK Eye Surgery
by: Nicola Kennedy
There are several LASIK benefits, which can be easily realized by going in for an experienced eye surgeon. It is necessary that you weigh the pros and cons before going in for an eye surgery. And much to your relief, as far as LASIK is concerned, the benefits far outweigh whatever minimal risk is involved. LASIK is by far the most preferred procedure when it comes to eye corrective surgery. LASIK benefits typically include:
- Clear natural vision
- Need for glasses or contact lenses is eliminated
- It simply widens the horizon for recreational opportunities
- Quality of vision is better than that with glasses or contact lenses
- Greater self-confidence
- More career opportunities
- Enhanced natural appearance ? in many cases
- No risk of infection or inflammation generally associated with contact...
Contact lenses > Clear Natural Vision Is Just One Of The Possible Benefits of LASIK Eye Surgery
suv Contact lenses Bifocal Contact Lenses ? What Are They