Gentle Vision Shaping
C R T,
“Corneal Refractive Therapy”,
Corneal Refractive Therapy is a non-surgical process clinically developed to reshape the cornea while you sleep. The result is the temporary correction of myopia with or without moderate astigmatism.
What Is Gentle Vision Shaping (CRT)
Similar in appearance to standard contact lenses, therapeutic lenses gently reshape the corneal surface during sleep and provide clear, natural vision when the lenses are removed upon waking.
Because these lenses offer freedom from glasses and the hassle of wearing contact lenses during the day, this leading-edge technology can enhance the lifestyle of those requiring vision correction. Active individuals can freely participate in sports without the interference of glasses or bother of contacts. Eye irritation or dryness, sometimes associated with contact lens wear due to outside dust and pollutants, is eliminated.
Now you can be free of daytime contact lenses and glasses during your daily activities without undergoing surgery and enjoy great vision! Recent clinical research combined with the latest corneal surface mapping technology, computerized manufacturing and space age oxygen-breathing materials have brought new science to corneal reshaping.
The Gentle Vision Shaping Candidate
Gentle Vision Shaping – Corneal Refractive Therapy (CRT) is for people of any age who are nearsighted.
The FDA has approved CRT for people with up to six diopters of myopia (-6.00 on your prescription); you may also have up to -1.75 diopters of astigmatism. The CRT procedures can be performed on practically anyone of any age, with healthy eyes.
Gentle Vision Shaping, CRT, is a great option for children and teens that are active in sports activities or any other extra curricular activities.
Not everyone is a candidate for CRT therapeutic lenses. Therapeutic lenses are not yet available for those who require reading glasses or bifocals (presbyopia). You may be fitted in a monovision mode (one eye corrected for near vision and one corrected for distance vision). You might still need reading glasses. However, since there are many variations in patient physiology and visual needs, the decision for CRT, at any age, can only be made after a thorough eye exam by us. At this time, farsightedness (hyperopia) is not correctable with CRT.
How It Works
Let’s first understand how FDA approved Corneal Refractive Therapy, Gentle Vision Shaping works to correct Myopia.
In the myopic eye, the focusing power is too great. Light focuses in front of the retina, making distant objects appear blurry.
When eyeglasses or contacts are worn, light is focused on the retina so you can see clearly.
Today, Corneal Refractive Therapy provides a new option for patients. Paragon CRT lenses correct myopia, with/without low or moderate astigmatism, by gently reshaping the cornea while you sleep.
The Perfect Place to Multi-Task…IN YOUR SLEEP!
The basic purpose of corneal refractive therapy is to improve visual function. For many, this is a safe, non-surgical approach to improving and restoring vision.
In people of all ages with increasingly stronger prescriptions, CRT can slow down or stop the need to get stronger glasses. Research shows that the effect may alter the person’s long-term prescription.
What to Expect Before, During, & After Gentle Vision Shaping – CRT
The basic purpose of FDA Approved corneal refractive therapy is to improve visual function. For many, this is a safe, non-surgical approach or alternative to improving and restoring vision.
On the first day of your procedure you should arrive at the office as rested and relaxed as possible. Don’t wear make-up for your initial fitting. It may interfere with the cleanliness of the procedure. Expect this visit to last approximately one hour.
The new contact lenses will be placed on your eyes. You will have an adaptation period of 10 to 20 minutes. During this time, you will feel a slight awareness of the lens on the lid. You will be instructed in the proper method of lens insertion and removal and the hygiene associated with the lenses. You will be given all the solution and instructions necessary to handle this at home.
We will train you until you have demonstrated proficiency with insertion, removal, and centering of your lenses. We will then discuss your lens-wearing schedule with you. To ensure the best possible results, it is essential that the wearing schedule be followed closely. Your exact wearing schedule depends on the severity of your myopia and your lens-wearing success.
During night wear, the eyelid covers the lens. This results in very little lens movement. You likely will have very little feeling of the lenses the first night. The lenses are highly oxygen-permeable, so the cornea will not be deprived of oxygen even when the lenses are worn while sleeping. After the initial session of contact fitting, you will be scheduled for an appointment one to two days later. This is a very important visit since the cornea and resulting vision are rapidly improving at this stage.
A follow-up exam will include an exam while wearing the lens, which includes an evaluation of the lens fit and visual acuity, and an exam with the lens removed. This includes measuring unaided visual acuity, corneal curvature measurements with keratometry, and corneal topography. The objective and subjective refraction determines your new vision correction, and biomicroscopy evaluates the health of the eye. A refitting of new accelerated contact lenses as necessary or possible contact lens modifications may take place.
Follow-up appointments are usually scheduled for two-weeks, one-month, and six-months, but can vary depending on your unique requirements. When it is determined that your maximum desired results have been achieved, a retainer lens program will be arranged. Retainer lens exams will be performed every year. Retainer lens wearing will range from every night to wearing the lenses only one night per week.
What is Paragon CRT?
Paragon CRT is a specially designed oxygen permeable therapeutic contact lens used in Corneal Refractive Therapy. Corneal Refractive Therapy is a sophisticated, non-surgical process, which reshapes the cornea while you sleep. You remove the lenses when you awake and are able to go throughout the day without any other correction.
Is Corneal Refractive Therapy Permanent?
No. It’s temporary. If you stop wearing the lenses regularly while you sleep, your vision will return to its original state in as little as 72 hours.
Can everyone wear Paragon CRT?
Not everyone can wear Paragon CRT. This lens is designed for individuals with low to moderate myopia (nearsightedness) with or without astigmatism (up to –1.75 diopters). Paragon CRT therapeutic lenses are not yet available in bifocal prescriptions for presbyopia (which requires reading glasses or bifocals). Depending on your needs, you may be fitted in a monovision mode (one eye corrected for near vision and one corrected for distance vision). You might still need reading glasses. However, since there are variations in patient physiology and visual needs, the decision for CRT, at any age, can only be made after a thorough eye exam. At this time, hyperopia (farsightedness) is not correctable with CRT.
The FDA placed no age restrictions on candidates for Corneal Refractive Therapy with Paragon CRT. CRT is being successfully performed on children 12 years old and younger. It can be a great option for children and teens that are active in sports activities or any other extra curricular activities.
How long does it take to reach good vision?
Most patients have rapid improvement in the first few days of treatment and achieve nearly their optimum vision in 10 to 14 days.
Are there any risks involved with wearing Paragon CRT?
There is a small risk involved when any contact lens is worn. It is not expected that the Paragon CRT lenses for contact lens Corneal Refractive Therapy will provide a risk that is greater than other contact lenses. There were no serious adverse events reported in the Paragon CRT FDA clinical study.
Can I see with my Paragon CRT lenses in?
Yes. One of the great features of the Paragon CRT lens is that if you have to get up in the middle of the night, you will be able to see where you are going. Or, if during the initial treatment phase, you find you need some form of vision correction, you can put in your Paragon CRT lenses and see clearly.
How often will I have to replace my Paragon CRT lenses?
Generally speaking the Paragon CRT lenses will have to be replaced once a year. However, depending on factors such as protein build-up, how well the lenses are taken care of, etc., the lenses may have to be replaced more frequently.
What is the cost for Paragon CRT lenses?
The cost of CRT lenses are less than any surgical procedure and a little more than the average person spends on yearly expenses related to contact lenses or glasses.
Is Corneal Refractive Therapy FDA approved?
Paragon CRT is the first therapeutic lens design approved by the FDA for overnight contact lens Corneal Refractive Therapy for the temporary reduction of myopia. Paragon Vision Sciences, the manufacturer of Paragon CRT, received the final written approval on June 13, 2002. The issuance of this approval is the culmination of the most extensive clinical study to date to establish the safety and efficacy of contact lens corneal reshaping in overnight use.
Will I still need a “Visual Restriction” on my driver’s license?
We will supply you with a document that states you are participating in a visual therapy program that eliminates the need for corrective lenses during working hours. The document should have an expiration date and you should have your driver’s license updated with a new vision screening through your local DMV office to reflect this change, before the expiration date.
I suffer from “Dry Eyes”, Can I have CRT?
Probably, but we can only determine this through a thorough eye examination. Many patients with dry eyes do well with CRT. Since you are wearing the lenses only while sleeping, the closed eye state minimizes evaporative loss of tears and can give dry-eye patients suitable vision without compromising the ocular surface.
A child’s vision changes. Is CRT appropriate for children and teenagers?
Yes, absolutely, CRT is used to retard the progression of nearsightedness and other refractive errors, and leave children and teenagers with a bright future.
Is CRT permanent?
After treatment and maximum results are achieved, retainer lenses are worn to stabilize the new corneal shape. Failure to wear the retainer lens on an ongoing basis will result in the return to the pre-existing prescription. Retainers may be prescribed during day or night.