Deliver proactive myopia management with orthokeratology lenses backed by 30+ years of research and trusted on over 2 million eyes worldwide.
Euclid has refined the art and science of myopia management, beginning with the Euclid Emerald™ design and continuing through decades of clinical research and innovation. The result is Ortho-K lens designs that deliver effective myopia management while maintaining fitting simplicity and comfort that practitioners can trust.
Euclid lenses are among the most widely studied Ortho-K lenses worldwide, having more than twice the myopia research of any other manufacturer.¹
In a peer-reviewed study, Euclid Ortho-K lenses were effective at slowing axial elongation in myopic children.¹
In a multi-center, multi-ECP retrospective analysis of Euclid MAX™ and Euclid MAX Toric Ortho-K Lenses, 89% of ECPs reported that their overall experience was better or significantly better compared with other Ortho-K lenses.**
Euclid Ortho-K lenses are designed to deliver excellent daytime vision, night wear comfort, and the predictable management of myopia.
Multi-Curve Design
Intended to support better centration for a closer, comfortable fit.
High Level of Precision
Wide parameter ranges and precision adjustments as small as 0.01 mm help support consistent results, even in complex cases.
Optimized Optic Zone
Tailored to each patient’s prescription and corneal shape.
Toric Elevation Adjustments
Designed to support a proper fit on astigmatic corneas.
Each Euclid Ortho-K lens is individually tailored using the patient’s prescription and corneal data, allowing refinements as the eye changes over time. This supports:
Euclid MAX and Euclid MAX Toric deliver the next generation of orthokeratology for myopia management, combining the outstanding material characteristics of tisilfocon A with proven Euclid designs.
Minimizes chair time while maximizing patient satisfaction.
*Based on internal data.
For comfortable lens wear and deposit resistance.
A Dk of 180, the highest of any US overnight Ortho-K brand, is especially important with young healthy eyes in the closed eye environment.
Optimized with the potential to resist warpage, scratches, and chips.
Euclid orthokeratology lenses are designed to fit the way you practice, with two fitting approaches that integrate easily into your existing workflow.
The all-new My Euclid® is a cloud-based platform that transforms topographer data into precise Ortho-K lens designs. Simply upload captures, review and customize the design, and submit your order, with every case reviewed by a Euclid specialist before shipping.
My Euclid integrates with a variety of topographer brands, including seamless one-click integration with Medmont Meridia®.
Our specialists review every order before it ships to help ensure successful fits every time.
Topography-guided lens design improves accuracy, delivering better first-fit outcomes and fewer remakes.
One streamlined platform for design, ordering, and management means less time on admin and more time with patients.
Resolve complicated cases quickly and precisely Step-by-step guidance identifies exactly what needs to change — so you can troubleshoot with confidence and precision.Step-by-step guidance identifies exactly what needs to change — so you can troubleshoot with confidence and precision.
Easy to delegate lens design, troubleshooting, and ordering to support staff.
Fit confidently without a trial set using just three data points:
Euclid MAX Brochure — Differentiate your practice with the next-generation Ortho-K for myopia management
Myopia Management Implementation Guide — Proven strategies to help you launch or grow your myopia management practice
Euclid Ortho-K Fitting Guide
Frequently asked questions by both practitioners and patients:
Euclid Ortho-K lenses are a brand of rigid, oxygen-permeable lenses for the temporary reduction of myopia. This patient-specific lens is to be worn overnight to gently reshape your patients’ corneas as they sleep. This reshaping is designed to provide clear daytime vision, free of glasses and contact lenses.
• There are several studies demonstrating the effectiveness and safety of orthokeratology.1-8
• Our Emerald and MAX product lines are manufactured only in materials that have U.S. FDA overnight wear approvals.* Euclid lenses have years of successful use by eyecare professionals around the world.
*Some products are only available in certain markets.
This modern treatment is safe,3 effective, FDA-approved, and proven on over 2 million eyes around the world.
Euclid is the world’s most researched Ortho-K design for myopia.9 Designed to fit the exact shape of your patient’s eye, there are no trial sets and no guesswork; simply provide your patient’s keratometry readings, refraction, and HVID (Horizontal Visible Iris Diameter), and our advanced algorithms will calculate the exact lens needed to fit your patient and correct their vision.
There are unique advantages of our proprietary lens designs:
• Multi-Curve Design gently aligns the peripheral cornea, offering better centration for a close, comfortable fit.
• Optimized Treatment Zone – the advanced algorithm results in a treatment zone based on each patient’s Rx and corneal shape.
• Elevation adjustments for astigmatic patients – limbus to limbus corneal elevation differences are easily incorporated into Euclid’s proven Toric design.
Euclid lenses are approved for the temporary reduction of myopia up to -5.00D and astigmatism up to -1.50DC. FDA Approved (PMA #P040029).
Euclid lenses can be worn by anyone regardless of age, and all patients can experience the benefit of clear sight during the day. However, studies have shown that myopia generally manifests between the ages of 8-12, so it is recommended that young patients are fit between those ages for the best management of their myopia. Starting a myopia management program at any time during the growth years (8-23 years of age) can still have great benefits.10-23
Unlike some Ortho-K brands, Euclid lenses do not require a trial set to achieve a successful fit. Provide accurate keratometry readings, sphero-cylindrical refraction, and HVID (Horizontal Visible Iris Diameter), and we will make lenses fit to the shape of your patient’s eyes. A baseline corneal topography is also recommended prior to starting any Ortho-K procedure.
While a topographer is not required to order your first lenses, it does provide a critical piece of information that will be useful for any consultation work if any fit issues arise. Topography is also recommended to determine when we may need to choose the best design option between the Euclid (sphere) and Euclid Toric lens.
Many eye care professionals will tell you that Euclid lenses are easy to incorporate into your practice, saving you chair time and giving you great first fit success. Euclid Vision Corporation also provides access to a consultation team of experienced Ortho-K specialists ready to help you. Call 1.800.477.9396 or email consultation@euclidsys.com at your convenience and we’ll ensure that your Euclid lenses provide you and your patients optimum results.
Since there is no trial set required to fit Euclid Ortho-K lenses, there is no upfront cost other than the cost of the lenses themselves. Additionally, our practice-friendly warranties will help you and your patients feel comfortable beginning the Ortho-K process.
Euclid Ortho-K lenses are all FDA-approved and have been shown to be safe and effective in several research studies.1-2,15,18 Each pair of lenses comes with an authorized package insert that includes safety information for the product.
Corneal astigmatism often will cause a lens to decenter in the closed eye. Euclid lenses are designed and approved to fit patients with up to -1.50D cylinder.* Euclid Toric lenses can improve centration and alignment in patients whose topography shows limbus-to-limbus “bow tie” pattern and/or over 25 microns of sagittal height difference between primary meridians at the 8 mm chord. Talk to a Euclid specialty lens consultant today to determine if a Euclid Toric design is indicated for your patient.
*Euclid Ortho-K is not indicated for the treatment of astigmatism.
• Orthokeratology is an in-demand eyecare specialty.
• Euclid lenses may help generate referrals for your practice.
• Offering Euclid Ortho-K lenses in your practice may help bring patients in at an early age.
• Patients can’t buy Euclid lenses online.
• Offering Euclid lenses can help you foster long-term patient loyalty.
• No initial trial lens investment.
All eyecare professionals must start by taking the FDA-required online Euclid certification test (www.geteuclidcertified.com).
*Certification requirement is only applicable to the US market.
After you pass the FDA-required* certification test, a certificate of completion is available for download and you can request to open an account with Euclid. A representative from Euclid will reach out to you to answer questions and provide access to valuable promotional & educational materials. Then it’s time to tell your staff about this exciting treatment process and how you expect Euclid Ortho-K will be presented to patients throughout your office.
*Certification requirement is only applicable to the US market.
Euclid lenses can be made in two materials, both of which are fully approved by the FDA for overnight Ortho-K. Tisilfocon A offers outstanding material characteristics and a Dk of 180. Oprifocon A has a proven history of Ortho-K use, and a Dk of 85. Both materials are available in green and blue tints.
Every Euclid lens has a laser mark identifier on the edge, which is a unique number. That number will only ever be used once, and can be used to identify the exact patient, eye, and order entered into our system. For easy at-home lens identification, Euclid recommends using green on the right and blue on the left.
Orthokeratology is a reversible, non-surgical procedure that uses a contact lens to gently reshape the thin front surface of the eye (called the cornea) as you sleep. This procedure may eliminate the need for glasses or daytime contact lenses to correct vision.
In general, you will start to see some improvement within the first days of treatment. Most patients should reach full correction within 1-2 weeks, and their vision stabilizes within another 1-2 weeks. However, everyone’s eyes are different, so your response could be faster or slower than average.
There have been several studies evaluating the safety and efficacy of orthokeratology lenses, and more studies are done every year.1-8
We recommend wearing your lenses for a minimum of 7-8 hours every night for the best results. If you sleep in the lenses for less time, you may not get as much corneal shape change and the vision clarity may fade throughout the day. Don’t worry though; resuming normal wear time will easily restore your vision and the treatment effect.
Even though Ortho-K has been a proven and widely used therapeutic option in many countries for over 20 years, it has received little attention by eye care practitioners and the consumer media until recently. As doctors have begun to recognize the growing problems associated with progressive myopia, they have become proactive in discussing Ortho-K and myopia management with patients and their families.
Ortho-K or orthokeratology is the name of the process of using specially shaped contact lenses overnight to gently reshape the cornea tissue. There are many branded products, such as Euclid Emerald and Euclid MAX, CRT, Dreamlens, and others that are used in the eye care field.
We only produce our lenses in materials that have full U.S. FDA approval for overnight wear. These materials are clinically proven to be safe and effective. There is a wealth of research indicating that Ortho-K treatment is safe for people of all ages, including children.3
Many people appreciate the freedom from daytime optical devices like glasses or soft contact lenses for improved athletic or academic performance, the requirements of certain careers, or just the cosmetic, social appearance.
Ortho-K designs are made with firm, oxygen-permeable plastics, all with FDA overnight approval. This means you may have some “lens awareness” initially as the underside of the eyelids are very sensitive. With closure of the lids, comfort increases and within a few days of adaptation, most patients are completely comfortable wearing overnight Ortho-K lenses. Even better, since the lenses are worn at night with the eyes closed, Ortho-K can be much more comfortable than daily-wear products. If you ever experience pain with any type of contact lens wear, you should contact your eyecare professional immediately.
Simple replacement of Euclid Ortho-K lenses is recommended every 12-14 months. A fresh set of lenses will keep your eyes safe and healthy and provide the best vision possible.
Unlike soft contact lenses, if you miss a night of wear with Euclid Ortho-K lenses, your vision clarity could be reduced the next day. Since Euclid lenses are designed for your unique eyes, it is important to contact your doctor immediately to order replacements. It is recommended that you always have a spare pair of Ortho-K lenses or backup glasses / contacts.
The cost of Euclid Ortho-K treatment is decided by the eyecare professional who provides your family’s vision care. You may be charged based on a specific number of office visits plus the cost of the lenses, or your doctor may bundle the visit and lenses into an all-inclusive treatment plan. Fees also vary based on your geographic location.
Generally, no. Ortho-K is considered an elective program by most insurers at this point.
Absolutely. Euclid Ortho-K lenses can be easily expensed through your FSA or HSA plans.
Visit schedules will vary depending on your eyecare professional and your individual eyecare needs. You will need to visit your eyecare professional several times during the initial process to be specifically measured for the lenses and to ensure that your Euclid lenses fit correctly, then for recurrent health checks as set by your doctor.
Unlike LASIK, which is a permanent surgical correction option, treatment with Euclid lenses is completely reversible. If you want to stop treatment for any reason, simply discontinue wearing your Euclid lenses and your corneal shape and resultant vision will return to the pre-treatment state before you started overnight Ortho-K treatment.
Not all patients are eligible for Euclid lenses; talk to your eyecare professional to determine your eligibility for Euclid Ortho-K treatment.
Euclid lenses can be worn by anyone regardless of age. For the management of progressive myopia, we recommend that you start Euclid orthokeratology treatment between 8 and 15 years of age. Your eye-care professional can recommend the best age to start Euclid Ortho-K treatment depending on your child’s individual myopia progression and family history.9-22
Patients with mild to moderate dry eye can wear Euclid Ortho-K lenses, but be sure to talk to your eye care professional to determine your best treatment for dry eye prior to starting with Ortho-K.
Euclid lenses are approved for most patients with mild to moderate corneal astigmatism. Talk to your eye care professional to determine your eligibility for Euclid Ortho-K.
To find a Euclid-certified Ortho-K eyecare professional near you, please fill out the dedicated form or call our customer service team at 800.477.9396. We would be happy to find someone in your area!
For most patients, daytime vision is acceptable within 24-48 hours of starting Ortho-K treatment. However, you may find the use of an older prescription of glasses, or your doctor may prescribe disposable daytime soft lenses for the first few days of wear. Your doctor will choose the most appropriate option to meet your needs.
Many patients suffer from dryness, allergies, or eye strain after 12-14 hours of daily wear with soft contact lenses. Ortho-K may offer you the opportunity to relieve these symptoms and requires fewer hours of nightly wear (7-9 hours). Ask your eye care professional if Ortho-K is a good option for you or your child.
Seasonal allergies may require medical treatment in the form of tablets, nasal sprays, or eye drops. These treatments may result in dryness that can make wearing daily lenses less comfortable. Ortho-K lenses, which are worn at night with the eyes closed, may present fewer symptoms of allergies. Ask your eye care professional if Ortho-K is a good option for you or your child.
Euclid lenses can be cleaned and disinfected daily with any approved cleaning system designed for firm gas permeable (GP) lenses. For details on specific brands or cleaner types, please discuss your options with your eyecare professional.
Your eye care professional and their staff will carefully train you on proper insertion and removal techniques that are both safe for your eyes and reduce lens wear and tear from handling. Watch our Insertion and Removal of Euclid Ortho-K Lenses Video to learn more.
Your lenses will be marked with a number on the edge called a “lasermark.” That number is unique to your lenses and will never be used again. You or your eyecare professional can read that number to confirm which lens is which if you ever get them mixed up. Many eyecare professionals will also order your lenses in a different color for each eye to make it very easy to tell them apart.
