Wearing contact lenses is one of the most popular ways of correcting a range of vision issues. Dr. Berke is well experienced with providing contacts for patients. Here are some of the most frequently asked questions we get here at Super Vision Center regarding the use of contacts among our patients.
Contact Lenses Q & A
Super Vision Center
What are The Myths Of Contact Lens Wear?
- 36% of Americans still assume contact lenses are not appropriate for children.
By the time a child is two years old, their corneas have grown to adult size so they can be fit with CLs similar to adults. And, depending on their maturity level and sense of responsibility, even a young child can be taught to insert, remove, and care for CLs (with some guidance from their parents). Children active in sports and activities, where glasses are a hindrance, and children with large prescriptions, benefit most from CLs. We have seen many introverted, quiet children who wore thick glasses come out their shells once we corrected their vision with CLs. CLs may possibly change their lives.
- 45% of Americans do not know that contact lenses can correct vision in individuals with certain conditions, such as astigmatism.
Many advancements have been made in soft toric contact lenses for astigmatism correction. Astigmatism is typically a factor of the cornea (the front part of the eye) having two curvatures. It is very normal. Most people have at least a small amount of astigmatism. If the astigmatism is large enough, specialty toric lenses may be indicated. They can provide a stable, and comfortable alternative to glasses.
- 61% of Americans believe that 20/20 is the best vision attainable through any means of vision correction.
20/20 is the standard measurement for your vision (i.e. visual acuity). This measurement means that you can see a specific size letter at a distance of 20 feet. For example, if you can see the letters on the 20/20 line, then you could see letters on the 20/200 line (larger letters) at 200 feet. 20/20 vision is average best correction for the population. Some see better, some see worse. So, it is very possible that you have better than 20/20 vision through means of glasses or CL correction.
- <25% know that contact lenses can sometimes correct vision to better than 20/20.
As mentioned above, in many cases it is possible that we can correct your vision to better than 20/20. This depends on several factors: the amount of your prescription, your age, your best-corrected visual acuity, how your eyes react to the specific contact lenses, etc.
What are Contact Lenses Made From?
Contact lenses are made out of several different types of plastics. Soft contact lenses are made out of flexible gel-like hydrophilic (water loving) plastic. There are also hydrophobic rigid gas permeable (RGP) lenses. Both soft and rigid materials allow oxygen to flow through the lens to the cornea but there is a category of RGP contacts known as hyper oxygen permeable contacts. These are used for Ortho-K for overnight vision correction. They are so oxygen permeable (even more so than soft contacts) they allow the cornea to breathe when worn like it isn’t even there. Ortho-K lenses are a revolutionary alternative to regular contacts that actually may stop the progression of Myopia and allow patients to see without irritation.
How Long Do Contacts Lenses Last?
Even with proper care, contact lenses must be replaced regularly to prevent deposits from building up and minimize the risk of contamination. Soft lenses are available in different varieties, according to the duration of time they can be worn safely. These include:
- Disposable- these are discarded every 2-4 weeks.
- Daily- these are discarded nightly and should only be worn once.
Rigid Gas Permeable lenses can last a lot longer because they are not as susceptible to deposit accumulation.
What Eye Conditions are Treated Using Contacts?
While some contact lenses are worn cosmetically to change eye color, the vast majority of contacts fitted today are to correct refractive errors like myopia (near sighted), hyperopia (far sighted) and or astigmatism. You can also use contacts for orthokeratology as a way to treat refractive errors overnight. If you need to have bifocals or progressives you can also use contact lenses called multifocal CLs. They offer an alternative for individuals suffering from age-related vision loss (presbyopia) and who prefer not to wear bifocals or trifocals or progressive lenses to be able to see clearly. There is also an application known as Monovision where one eye is corrected for distance vision and the other for near. This works beautifully 90% of the time. Other eye conditions treated using contacts include color vision deficiencies which can be improved in some patients with contacts. Therapeutic scleral lenses are used to treat keratoconus and other corneal disorders including post surgical mishaps.
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