
What is ortho-k (orthokeratology)?
Sep 13, 2018 · Orthokeratology, or ortho-k, is the use of specially designed and fitted contact lenses to temporarily reshape the cornea to improve vision. It’s like orthodontics for your eyes and the treatment is often compared to dental braces. Most ortho-k lenses are worn at night to reshape the front surface of the eye while you sleep.
Can Ortho-K lenses be used with other lenses?
Orthokeratology is a non-surgical treatment that uses precise, specially shaped contact lenses to temporarily reshape the cornea in order to eliminate nearsightedness or myopia so that you can see better at distance without wearing eyeglasses or …
What are ortho-k braces?
Orthokeratology treatment, or Ortho-K, is a non-surgical procedure that reshapes the cornea. Participants in this unique treatment are prescribed specialized contact lenses, which they wear overnight. With consistent use, these lenses gently help …
What happens during ortho-k surgery?
Eye doctors prescribe ortho-k lenses for two purposes: To correct refractive errors (primarily nearsightedness, but also astigmatism and farsightedness ). In some cases,... To slow the progression of childhood myopia.

Does Ortho-K improve eyesight permanently?
Is Orthokeratology Permanent? No. It's temporary. If you stop wearing Ortho-K Lenses regularly while you sleep, your vision will return to its original state in as little as 72 hours.
How long does Ortho-K last?
3. The effect of ortho-K lenses can last for more than a day. Typically, the vision-clearing effects of ortho-K contact lenses last up to 2 full days. During this period, the patient will be mostly or entirely free of the issues that previously plagued their vision.Sep 18, 2018
What does Ortho-K cost?
Generally speaking, treatment ranges from $1,000 to $2,000 but difficult cases can cost as much as $4,000. Additional costs include replacement lenses, lens care solution and follow-up exams which can total $300 to $500 a year.Mar 5, 2021
Are Ortho-K lenses worth it?
Orthokeratology is an excellent option for all adults who need myopic prescriptions. It's also great for those who have lesser degrees of astigmatism. Additionally, ortho-k is often used as a proven treatment method for farsightedness (hyperopia) and age-related hardening of the eyes' lenses (presbyopia).
Is Ortho-K better than Lasik?
Unlike LASIK, Ortho-k has almost no side effects and has been helping people see safely and comfortably since 1994. These FDA approved lenses were originally developed as a corrective method to control myopia progression in children, though it is equally effective in correcting adult vision.
Does Ortho-K cause dry eyes?
With respect to symptoms during ortho-K lens wear at night, none of the subjects reported difficulty falling asleep, but 30% to 40 % of subjects reported occasional ocular discomfort, itchy/burning/dry eyes and foreign body sensation after lens insertion.Jul 31, 2020
Is Ortho-K cheaper than Lasik?
More Cost-Effective Both LASIK and ortho-k will most likely save you money in the long term, as eyeglasses, contact lenses and other related expenses are no longer incurred. That said, in most cases, the up-front expenses of ortho-k lenses are about half the cost of LASIK surgery.Nov 29, 2021
Who is a good candidate for Ortho-K?
Ortho-K works best for people with blurry distance vision (myopia or nearsightedness) who require a corrective lens prescription of up to -6.00. Low to moderate astigmatism (un-even eye curvature) may also respond well to Ortho-k contact lenses.Aug 9, 2017
Can you swim with Ortho-K?
You can wear normal swimming goggles or go without. Your vision will be a little blurry underwater, like everyone else who doesn't wear glasses. This is normal. What happens if I lose an Ortho K corneal mould?
What are the disadvantages of Ortho-K?
Disadvantages of Ortho K Ortho K lenses are small and can be lost or broken if mishandled, requiring a replacement lens to be ordered in such mishaps. For the first few days of Ortho K wear there may some eye sensitivity adapting to wearing rigid lenses.Nov 27, 2019
Is Ortho-K risky?
As with all contact lenses, there is a small risk of side effects associated with the use of Ortho-K lenses. The most common side effects include corneal edema (or swelling) and corneal strain or stress. These side effects can occur for wearers of any type of rigid contact lenses, including Ortho-K.
Do Ortho-K lenses hurt?
Ortho-k lenses are uncomfortable at first. They don't hurt, but you won't forget that you're wearing lenses like you might with a daily disposable soft lens. Children who have never worn lenses before can be especially difficult to work with.Jul 11, 2018
The Orthokeratology Procedure – Being Prepared
Orthokeratology involves first measuring the refraction of your eye, which tells the doctor the degree of nearsightedness, farsightedness, or astig...
Am I A Candidate For Ortho-K?
People who are best suited for Ortho-K have myopia less than -4.00 diopters and astigmatism less than -1.50 diopters. Ortho-K is safe for people of...
Orthokeratology Advantages
1. Non-surgical method 2. Available for most people 3. Freedom from constant corrective lens wear 4. Better vision improvement
Orthokeratology Disadvantages
1. Longer result time 2. Not a permanent solution 3. Higher startup cost than regular contacts or eyeglasses 4. Currently only for myopia
What You Should Know About Paragon Corneal Refractive Therapy Crt
Paragon Corneal Refractive Therapy, or CRT, is similar to Ortho-K except that it uses a more specialized design. Paragon CRTs are “designed oxygen...
Orthokeratology and Crt Costs
Ortho-K and crt are both more costly at startup than normal contact lenses and eyeglasses. After the initial correction, however, retainer contacts...
Orthokeratology Side Effects
Although orthokeratology is effective, it is only as effective as the commitment of the patient. If the lenses are worn constantly, the patient’s v...
Talking to Your Eye Doctor
Here are some questions to ask your eye care professional about orthokeratology and CRT: 1. Which do you recommend for me, Ortho-K or CRT? Why? 2....
What Is Corneal Refractive Therapy (CRT)?
Paragon CRT (Paragon Vision Sciences) is a specific brand of corneal reshaping lenses that has a proprietary lens design and fitting methodology, c...
How Long Does The Ortho-K Effect Last?
You should be able to see acceptably well without glasses or contact lenses for a day or two, sometimes longer. For best results, you should wear t...
Which Vision Problems Can Ortho-K correct?
Orthokeratology is most frequently used to temporarily correct myopia (nearsightedness). Generally, ortho-k can correct upwards of -6.00 diopters (...
Who Is A Good Candidate For Orthokeratology?
Most people with mild to moderate myopia (with or without mild astigmatism) are good candidates for ortho-k.Because the corneal reshaping effect is...
What Results Can You Expect from Ortho-K?
Eye care practitioners usually aim for 20/20 vision after ortho-k, but 20/40 vision (the legal minimum for driving in most of the United States) of...
What to Expect When You Begin Ortho-K
The eye doctor will begin by measuring the curvatures of your corneas using an instrument called a corneal topographer — a painless procedure that...
How Long Does It Take For Maximum Ortho-K Effect?
This depends on many factors, especially the amount of nearsightedness (and possibly astigmatism) you have when you begin the ortho-k process.Some...
How Much Does Ortho-K Cost?
Fitting ortho-k lenses is a more time-consuming process and requires more expertise than fitting regular contact lenses. It requires a series of of...
Bonus Q&A: Can I Have Lasik After Ortho-K?
Yes, it's possible to have LASIK after ortho-k if you later desire vision surgery to permanently correct your eyesight.Unlike LASIK, ortho-k is rev...
What is Ortho K?
Ortho-k is mainly used to correct near-sightedness (myopia). This vision problem can also usually be corrected by eye glasses, regular contact lenses, LASIK or PRK. Orthokeratology is a surgery-free way for some people to leave their glasses behind and not have to wear contact lenses all the time. Ortho-k is sometimes recommended ...
How much does ortho K cost?
Ortho-k prices generally range from $1,000 to $4,000.
How do orthokeratology lenses work?
The lenses work by flattening the center of the cornea, changing how light is bent as it enters the eye. Most orthokeratology lenses are worn overnight to flatten the cornea, then removed during the day. These overnight lenses are rigid, gas-permeable lenses that are sturdy enough to reshape the cornea, but also allow oxygen through so your eye ...
How much does Ortho K cost?
The total cost will range from $900 to $1,800 with two sets of lenses and fittings.
How long does orthokeratology treatment last?
Orthokeratology technology continues to improve, and the average duration of treatment is now one week, versus the twelve to eighteen months it used to take.
What is the instrument used to map the shape of the front surface of the eye?
Next it will be necessary to map the shape of the front surface of the eye using an instrument called a corneal topographer.
What is RGP contact lens?
Most often the doctor will prescribe specially designed rigid gas permeable (RGP) contact lenses that gradually alter the shape of the cornea and temporarily eliminate myopia. It all began in the 1960s, when doctors realized that the hard contact lenses of the time caused a slight change in the shape of the cornea.
Is Ortho K safe for people?
People who are best suited for Ortho-K have myopia less than -4.00 diopters and astigmatism less than -1.50 diopters. Ortho-K is safe for people of all ages, as long as their eyes are healthy.
Is orthokeratology effective?
Although orthokeratology is effective, it is only as effective as the commitment of the patient. If the lenses are worn constantly, the patient’s vision will improve, but once the lenses are removed for an extended period, the eye will return to its original shape and the patient’s vision will revert back to its refractive error state.
Can orthokeratology be permanent?
No. It’s temporary. If you stop wearing Ortho-K Lenses regularly while you sleep, your vision will return to its original state in as little as 72 hours.
Does Ortho-k Really Work?
Ortho-K lenses can be effective for almost anyone, but children are particularly good candidates.
Is ortho-k bad for Your Eyes?
Wearing ortho-k lenses has been linked to an increased risk of bacterial and microbial eye infections. Keeping your lens clean is key to good eye health.
How Long does Ortho-k Last?
The effect of ortho-K lenses can last for more than a day. Typically, the vision-clearing effects of ortho-K contact lenses last up to 2 full days
Treatment for Myopia
Many Americans are familiar with the effects of myopia, or nearsightedness. If you’ve ever had difficulty seeing distant objects clearly, then you know how much frustration this common vision problem can cause.
Myopia Lens
This treatment requires specially calibrated, gas-permeable contact lenses that allow oxygen to flow directly to the cornea. Since oxygen is a critical element of eye health, restoring healthy levels is the first step to solving many common problems.
Orthokeratology Treatment in the San Fernando Valley (SFV)
Because the benefits of Ortho-K contact lenses overnight are temporary, it’s important that patients regularly follow up with an orthokeratology specialist. Dr. Leonard and Associates offer orthokeratology treatment at their Panorama City optometry office.
What is ortho K?
Ortho-k lenses are also called "corneal reshaping contact l enses" or "overnight contact lenses to correct or control myopia. ". One specific brand of ortho-k lenses and fitting technique is Bausch + Lomb's Vision Shaping Treatment (VST). But ortho-k can be safely and successfully performed with other gas permeable ...
How much does ortho K cost?
Ortho-k prices in the U.S. generally range from $1,000 to $2,000 (for both eyes), making the procedure roughly half the cost of LASIK. But particularly difficult cases of ortho-k can cost as much as $4,000.
What are ortho K lenses?
Ortho-k lenses are prescribed for two purposes: 1 To correct refractive errors (primarily nearsightedness, but also astigmatism and hyperopia ). In some cases, ortho-k also is used to correct presbyopia. 2 To slow the progression of childhood myopia. ( Read more about myopia control.)
What is orthokratology?
Orthokeratology (ortho-k) is the fitting of specially designed gas permeable contact lenses that you wear overnight. While you are asleep, the lenses gently reshape the front surface of your eye (cornea) so you can see clearly the following day after you remove the lenses when you wake up.
What is a paragon CRT?
Paragon CRT (Paragon Vision Sciences) is a specific brand of corneal reshaping lenses that has a proprietary lens design and fitting methodology, called corneal refractive therapy (CRT). Though technically different than orthokeratology, CRT is used for similar purposes and produces comparable results. For simplicity, I'll be using the terms ...
Who is Gary Heiting?
Gary Heiting, OD, is a former senior editor of AllAboutVision.com. Dr. Heiting has more than 30 years of experience as an eye care provider, health educator and consultant to the eyewear ... Read more
Can you have lasik after orthok?
Yes, it's possible to have LASIK after ortho-k if you later desire vision surgery to permanently correct your eyesight. Unlike LASIK, ortho-k is reversible. If you try reshaping lenses and later decide you want laser eye surgery instead, you can do that.
What is ortho K?
Ortho-K (short for Orthokeratology) is a non-surgical procedure using specially designed contact lenses to gently reshape the curvature of the eye to improve vision. If playback doesn't begin shortly, try restarting your device. Videos you watch may be added to the TV's watch history and influence TV recommendations.
What is the cornea?
Think of the cornea as the eye's equivalent of a watch crystal. It is a clear, dome shaped structure that overlies the colored iris. Its tissue is most similar to clear, wet skin; and like skin it is very pliable.
What is orthokratology eyeglasses?
Orthokeratology (ortho-k) is a non-invasive treatment method for refractive errors seen as an alternative to wearing contact lenses or eyeglasses. The treatment is very effective, but it does involve an adjustment period that some patients find a bit challenging.
How long do you have to wait to take off gas permeable eyeglasses?
Don’t worry because it’s painless and easy to use. You’ll need to apply more lubricating drops and then wait 10 minutes before removing the lenses.
About Orthokeratology
Orthokeratology, also called ortho-k, is an innovative new treatment that enables patients to see clearly without glasses, contact lenses or laser eye surgery. It involves the use of bespoke designed and fitted contact lenses to temporarily reshape the cornea to improve patient vision.
What can Orthokeratology be Used For?
Orthokeratology is primarily used to correct myopia – nearsightedness. This is when you can see objects close to your face, such as a book or cellphone screen clearly, but those that are further away appear blurred.
Is Orthokeratology Safe?
Many people have concerns about wearing contact lenses overnight since normally this isn’t advised. However, ortho-k lenses have been specifically developed with night-time wear in mind.
What is ortho K?
It is the process of molding or reshaping the surface of the cornea without surgery, only using a special contact lens.
Why are there myths about orthokeratology?
"Because there is concern about the safety and efficacy of orthokeratology, there are some myths associated with the process. During your appointment, your eye care doctor can explain in more detail, but here are some common myths about safety information related to orthokeratology:"
When was orthokratology first used?
( Learn More) The process was pioneered in the 1960s, but it was not approved until after extensive study by the FDA.
Is overnight orthokeratology safe?
While there were reports of adverse events (namely, infections) in the early era of orthokeratology treatment, overnight orthokeratology has been found to be largely safe for people of all ages, from young children to adults. It slows the progression of myopia or temporarily eliminates the issue .
Can orthokeratology help with nearsightedness?
Children who develop nearsightedness may benefit from orthokeratology if their visual issue is a fast-progressing type of myopia. In a 2012 study looking at 7- and 8-year-old children, 65 percent of the group wearing spectacles were deemed to have this type of nearsightedness.
Does Ortho K work?
Ortho-K works well for people with lower degrees of myopia (nearsightedness) or low-level astigmatism. Reshaping the eye without surgery is an appealing option for many people who may not like the idea of small blades or lasers reshaping their cornea and lens, even if the healing time is only a day or two.
Is myopia a short term benefit?
While there are significant short-term benefits for both children and adults in managing myopia or a stigmatism, there are also some risks and adverse effects that have been reported with this form of treatment. It is worth noting, however, that the risks are not dissimilar to those of typical soft contact lenses.
What is Ortho K?
Ortho K are custom-made rigid lenses that are worn overnight. They gently reshape the cornea (the clear dome at the front of the eye) so that you can see clearly during the day without the need for glasses or contact lenses. This provides lifestyle benefits, particularly for active children and adults, sports and recreational activities. The corneal reshaping is reversible. Thus if you stop wearing the Ortho K lenses, your eye shape and prescription will return to its pre Ortho K baseline. It is also an alternative to LASIK or other refractive surgery for adults. There is some awareness of the Ortho K lens on eye initially when applied and there is generally very good adaptation and comfort. It can be worn to correct vision in children and adults.
What is the best way to correct myopia?
Orthokeratology can be used to correct myopia (short-sightedness), hyperopia (long-sightedness), astigmatism and presbyopia (blurred near vision that commences when we reach our 40s). To assess if you are a good candidate, your optometrist will map the front surface of your eye with an instrument called a topographer.
What is the cause of shortsightedness?
Myopia (short-sightedness) has been recognised as one of the five leading causes of blindness and visual impairments in the world by the World Health Organisation.
Does Ortho K slow myopia?
The effect of Ortho K in changing eye muscle coordination, particularly for eye muscle postures shown to be risk factors for myopic progression, is another suggested hypothesis for its proven effect in slowing myopia progression.
Is orthokeratology safe for children?
Research shows that Orthokeratology is a safe treatment for correcting vision and use in myopia control. There is a small risk of a serious eye infection with any type of contact lens wear, but these risks are low – read more about contact lens safety in children via this link.

How Does Ortho-K Work?
- The corneais a transparent eye structure. It helps you see by focusing light to the retina. When the cornea is not the right shape, it causes refractive errors such as myopia, hyperopia, and astigmatism. A refractive error makes it difficult to see clearly at certain distances. Ortho-k lens…
Is Ortho-K Safe & Effective?
- Yes, ortho-k lenses are safe and effective for people of all ages. A systematic review of 170 ortho-k studies shows it can safely treat and delay the progression of myopia.3 People who start overnight orthokeratology between the ages of 7 and 16 years can slow the progression of their myopia.4 Researchers followed their progress over 12 years. They found ortho-k lenses to be cli…
How Much Do Orthokeratology Lenses Cost?
- Ortho-k lenses cost an average of $1,000 to $4,000. Ongoing treatment will cost you $300 to $500 per year.1 These additional treatment costs will cover your lens replacement, lens care solutions, and follow-up visits with your eye doctor.
Alternative Treatment Options
- Orthokeratology uses temporary lenses. Like glasses and regular contact lenses, they can temporarily improve: 1. Nearsightedness (myopia) 2. Farsightedness (hyperopia) 3. Blurred vision (astigmatism) If you prefer a more permanent solution, you can opt for LASIK eye surgery. It uses a laser to reshape your cornea and correct the way your eye refracts light.10 LASIK surgery can t…