Visit Euclid Emerald China

Shape the Future of Vision

Join the Global Leader in Myopia Management.

For 20+ years, Euclid has refined the art and science of myopia management. Around the world, we’ve focused on today’s most challenging regions, like Asia, where myopia rates first reached epidemic levels. Today, Euclid is the #1 Ortho-K lens design in the world.

As myopia’s impact climbs across the globe, we’re partnering with an increasing number of select eye care professionals, so more patients can benefit from the sophisticated, yet simple and modern design of Euclid Emerald.


Advancing the
Geometry of Sight

Euclid, the Greek mathematician considered the father of geometry, inspired the creation of the Euclid Emerald myopia management treatment.

We’ve harnessed the power of geometry to shape today’s most advanced orthokeratology lens design for myopia management. We call it Euclid Emerald. It’s orthokeratology elevated. The smart, modern way to offer Ortho-K.

1. Dual Alignment Curves gently align the peripheral cornea, offering better centration for a closer, comfortable fit

2. MyoKTM Lens Design creates desirable peripheral myopia defocus by ensuring plus power as close to the pupil as possible

3. Empirical and Intuitive Design offers control over the size of the treatment zone

Unlike other options such as atropine or soft multifocal contact lenses, Euclid Emerald Treatment helps manage myopia without the use of daytime glasses or sacrificing a child’s visual acuity during the day.

Patient-Specific Lenses with Proprietary MyoKTM Design

Unlike conventional corneal reshaping or vision shaping treatment alternatives, each Euclid Emerald myopia management lens is specifically designed for the individual patient’s eyes.

We share your personalized approach to patient care. With Euclid Emerald, you don’t select a lens that’s the closest match from a fitting set. You provide patients the correct lens, specifically designed for their unique eyes. It’s tailored myopia management that complements your patient-centered practice.

As the child grows, and their eyes change, Euclid Emerald lenses offer an unmatched capacity to easily fine-tune the child’s lenses to their changing parameters.

Wide Selection of Designs

Every child deserves better vision and healthy eyes for life.

Euclid Emerald offers a number of treatment options designed for different types of eyes. Euclid Emerald and Euclid Emerald Toric.


Three Factor Fitting With No Fit Set Required

Your chair time is critical.

The modern Euclid Emerald design is simple to implement in your practice, thanks to the power of three factor fitting. All we need are the following parameters. The Rx, the K readings and HVID. Using our proprietary algorithms, we do the rest — designing lenses specifically for your patient. This process is as close to a soft lens fit as you can get. This efficient, empirical process is devoid of guesswork and yields a more than 80% first fit and 95.5% fit success.1* And with no fit set, you’re set on day one, without any investment outlay.
*With up to 1 exchange.


Just provide these three parameters and our proprietary algorithms will do the rest




Compelling Evidence of Success

The efficacy and safety of Euclid Emerald Treatment is well documented in international peer-reviewed literature. While it is not a cure for nearsightedness, evidence from clinical studies show a ~46% myopia reduction with Ortho-K treatment.1-8

Proven Management of Myopia

Several pivotal clinical studies conducted by prestigious independent researchers prove the performance of next-generation Euclid Emerald Treatment.9,10

Clinically Proven Performance

Results from Ortho-K clinical research including, but not limited to the following, have proven the safe and effective application of orthokeratology for myopia management. Click to review these studies.

Long-Term Effect of Overnight Orthokeratology on Axial Length Elongation in Childhood
The Control Effect of Orthokeratology on Axial Length Elongation in Chinese Children with Myopia


My patients frequently have 20/20 vision after one night of wear. Patients are thrilled.

- Dr. Suzanne Offen, Westfield, NJ

I can’t imagine achieving a practice in which over one-half of my patients are in Ortho-K molds without having Euclid designs in my arsenal in the battle against progressive myopia.

- Dr. Robert Gerowitz, Palatine, IL

The Emerald design is simple to fit with a minimal learning curve and, if needed, expert consulting support has been very helpful.

- Dr. Michael J. Lipson, Northville MI,

The process is very straightforward, and the referrals that these happy patients generate have significantly grown the myopia control portion of my practice.

- Dr. Stephanie Fromstein, Chicago, IL