--- title: PVS Articles | corneal refractive therapy description: corneal refractive therapy | Welcome to the blog of Paragon Vision Sciences, where you will find up-to-date information and research on myopia, CRT® Lenses, and orthokeratology (ortho-k). --- Type and Press “enter” to Search [![CooperVision](https://marketing.coopervisionsec.com/hs-fs/hubfs/Logo_CooperVision-Orange.png?width=900&height=272&name=Logo_CooperVision-Orange.png "CooperVision")](http://coopervisionsec.com) [Practitioner Site](https://www.paragonvision.com/ecp/) - [Myopia Epidemic](https://www.paragonvision.com/the-myopia-epidemic/) - [CRT Lenses](https://www.paragonvision.com/crt-lenses/) - [Find an Eye Doctor](https://www.paragonvision.com/find-an-eye-doctor/) - Connect - [Blog](https://blog.paragonvision.com/blog) - [FAQ](https://www.paragonvision.com/faq/) - [Contact Us](https://www.paragonvision.com/contact-us/) - [Myopia Epidemic](http://paragonvision.com/the-myopia-epidemic/) - [CRT Lenses](http://paragonvision.com/crt-lenses/) - [Find an Eye Doctor](http://paragonvision.com//find-an-eye-doctor/) - [Connect](http://paragonvision.com/connect/) - [Become a Provider](http://paragonvision.com/become-a-provider/) - [Blog](https://marketing.coopervisionsec.com/blog) - [FAQ](http://paragonvision.com//faq/) - [Connect](http://paragonvision.com/connect/) - [Practitioner Login](https://www.paragonvision.com/ecp/) Search # Category Archive corneal-refractive-therapy ## [Have You Heard of Overnight Contact Lenses like Paragon CRT®?](https://marketing.coopervisionsec.com/blog/have-you-heard-of-overnight-contact-lenses-like-paragon-crt) Paragon Vision February 18, 2020 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [quality of life](https://marketing.coopervisionsec.com/blog/topic/quality-of-life), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes) [![](https://marketing.coopervisionsec.com/hubfs/shutterstock_610890650%20resize.jpg)](https://marketing.coopervisionsec.com/blog/have-you-heard-of-overnight-contact-lenses-like-paragon-crt) Technology is changing the world. It has transformed the way we do everything from making a meal to hailing a taxi. Isn’t it about time that technology... [Read More](https://marketing.coopervisionsec.com/blog/have-you-heard-of-overnight-contact-lenses-like-paragon-crt) ## [What is Astigmatism?](https://marketing.coopervisionsec.com/blog/what-is-astigmatism) Paragon Vision February 13, 2020 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [what is myopia](https://marketing.coopervisionsec.com/blog/topic/what-is-myopia), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eye health](https://marketing.coopervisionsec.com/blog/topic/eye-health), [vision health](https://marketing.coopervisionsec.com/blog/topic/vision-health), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health), [paragon vision sciences](https://marketing.coopervisionsec.com/blog/topic/paragon-vision-sciences), [astigmatism](https://marketing.coopervisionsec.com/blog/topic/astigmatism), [dual axis](https://marketing.coopervisionsec.com/blog/topic/dual-axis), [Paragon CRT Dual Axis®](https://marketing.coopervisionsec.com/blog/topic/paragon-crt-dual-axis) [![](https://marketing.coopervisionsec.com/hubfs/shutterstock_1493254991%20resize.jpg)](https://marketing.coopervisionsec.com/blog/what-is-astigmatism) Struggle to see clearly at a distance? You may be nearsighted. You may also have astigmatism, a refractive condition in which light does not focus equally... [Read More](https://marketing.coopervisionsec.com/blog/what-is-astigmatism) ## [Nearsightedness and Farsightedness; What’s the Difference?](https://marketing.coopervisionsec.com/blog/nearsightedness-and-farsightedness-whats-the-difference) Paragon Vision December 26, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [quality of life](https://marketing.coopervisionsec.com/blog/topic/quality-of-life), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [what is myopia](https://marketing.coopervisionsec.com/blog/topic/what-is-myopia), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eye health](https://marketing.coopervisionsec.com/blog/topic/eye-health), [vision health](https://marketing.coopervisionsec.com/blog/topic/vision-health), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health) [![](https://marketing.coopervisionsec.com/hubfs/shutterstock_1250903914x.jpg)](https://marketing.coopervisionsec.com/blog/nearsightedness-and-farsightedness-whats-the-difference) How many people do you know who wear contacts or glasses? Globally, at least 2.2 billion people have a vision impairment or blindness, of whom at least 1... [Read More](https://marketing.coopervisionsec.com/blog/nearsightedness-and-farsightedness-whats-the-difference) ## [3 Reasons Why You Should Try Ortho-K Contacts to Treat Nearsightedness](https://marketing.coopervisionsec.com/blog/3-reasons-why-you-should-try-ortho-k-contacts-to-treat-nearsightedness) Paragon Vision December 12, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [lifestyle](https://marketing.coopervisionsec.com/blog/topic/lifestyle), [quality of life](https://marketing.coopervisionsec.com/blog/topic/quality-of-life), [swimming](https://marketing.coopervisionsec.com/blog/topic/swimming), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [what is myopia](https://marketing.coopervisionsec.com/blog/topic/what-is-myopia), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eye health](https://marketing.coopervisionsec.com/blog/topic/eye-health), [vision health](https://marketing.coopervisionsec.com/blog/topic/vision-health), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health), [paragon vision sciences](https://marketing.coopervisionsec.com/blog/topic/paragon-vision-sciences) [![](https://marketing.coopervisionsec.com/hubfs/shutterstock_268731347.jpg)](https://marketing.coopervisionsec.com/blog/3-reasons-why-you-should-try-ortho-k-contacts-to-treat-nearsightedness) Nearsightedness—the inability to see clearly at a distance—is on the rise. It affects 1 in 3 Americans, and researchers have confirmed that this number is... [Read More](https://marketing.coopervisionsec.com/blog/3-reasons-why-you-should-try-ortho-k-contacts-to-treat-nearsightedness) ## [Top Questions Parents Ask About Paragon CRT®, Overnight Vision Correction for Nearsighted Children](https://marketing.coopervisionsec.com/blog/top-questions-parents-ask-about-paragon-crt-overnight-vision-correction-for-nearsighted-children) Paragon Vision November 26, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [safety](https://marketing.coopervisionsec.com/blog/topic/safety), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [what is myopia](https://marketing.coopervisionsec.com/blog/topic/what-is-myopia), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eye health](https://marketing.coopervisionsec.com/blog/topic/eye-health), [vision health](https://marketing.coopervisionsec.com/blog/topic/vision-health), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health) [![](https://marketing.coopervisionsec.com/hubfs/shutterstock_757132609.jpg)](https://marketing.coopervisionsec.com/blog/top-questions-parents-ask-about-paragon-crt-overnight-vision-correction-for-nearsighted-children) Have you ever heard of contacts you wear overnight? While it is dangerous to sleep in regular daytime contacts, there is a type of lens that is safe, and... [Read More](https://marketing.coopervisionsec.com/blog/top-questions-parents-ask-about-paragon-crt-overnight-vision-correction-for-nearsighted-children) ## [Space Age Lenses: How NASA Helped Us Develop Paragon CRT®](https://marketing.coopervisionsec.com/blog/space-age-lenses-how-nasa-helped-us-develop-paragon-crt) Paragon Vision October 10, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [research](https://marketing.coopervisionsec.com/blog/topic/research), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health) [![](https://marketing.coopervisionsec.com/hubfs/Space%20Age%20Lenses%20How%20NASA%20Helped%20Us%20Develop%20Paragon%20CRT%C2%AE.jpg)](https://marketing.coopervisionsec.com/blog/space-age-lenses-how-nasa-helped-us-develop-paragon-crt) Experiments are often hindered by the powerful interference of gravity. But away from its constraints, chemicals, liquids, and gases behave differently.... [Read More](https://marketing.coopervisionsec.com/blog/space-age-lenses-how-nasa-helped-us-develop-paragon-crt) ## [How a Visit to Your Eye Doctor Can Benefit Your Overall Health](https://marketing.coopervisionsec.com/blog/how-a-visit-to-your-eye-doctor-can-benefit-your-overall-health) Paragon Vision September 30, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [Eye Doctor](https://marketing.coopervisionsec.com/blog/topic/eye-doctor), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eye health](https://marketing.coopervisionsec.com/blog/topic/eye-health), [vision health](https://marketing.coopervisionsec.com/blog/topic/vision-health), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes), [health](https://marketing.coopervisionsec.com/blog/topic/health) [![](https://marketing.coopervisionsec.com/hubfs/HOW%20A%20VISIT%20TO%20YOUR%20EYE%20DOCTOR%20CAN%20BENEFIT%20YOUR%20OVERALL%20HEALTH%20FB.jpg)](https://marketing.coopervisionsec.com/blog/how-a-visit-to-your-eye-doctor-can-benefit-your-overall-health) The eyes say a lot about a person. They can tell you how a person is feeling whether they are frustrated, bored, or anxious. Not only can the eyes give... [Read More](https://marketing.coopervisionsec.com/blog/how-a-visit-to-your-eye-doctor-can-benefit-your-overall-health) ## [Why FDA Approval Matters](https://marketing.coopervisionsec.com/blog/why-fda-approval-matters) Paragon Vision September 04, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [FDA Approved](https://marketing.coopervisionsec.com/blog/topic/fda-approved), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [optometrist](https://marketing.coopervisionsec.com/blog/topic/optometrist), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [vision](https://marketing.coopervisionsec.com/blog/topic/vision), [nearsightedness](https://marketing.coopervisionsec.com/blog/topic/nearsightedness), [eyes](https://marketing.coopervisionsec.com/blog/topic/eyes) [![](https://marketing.coopervisionsec.com/hubfs/Consumers-FDA-1200X627.jpg)](https://marketing.coopervisionsec.com/blog/why-fda-approval-matters) FDA approved, cleared, listed, and registered; what do they all mean? From our food to our cosmetics to medical devices – it is up to the FDA to regulate... [Read More](https://marketing.coopervisionsec.com/blog/why-fda-approval-matters) ## [Give Your Child the Competitive Edge](https://marketing.coopervisionsec.com/blog/give-your-child-the-competitive-edge) Paragon Vision August 14, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [quality of life](https://marketing.coopervisionsec.com/blog/topic/quality-of-life), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt), [sports](https://marketing.coopervisionsec.com/blog/topic/sports) [![](https://marketing.coopervisionsec.com/hubfs/Soccer-competative-edge.jpg)](https://marketing.coopervisionsec.com/blog/give-your-child-the-competitive-edge) Soccer, football, baseball, basketball, volleyball, tennis, track and field, even badminton – sports enrich a child’s life! Sports can teach a child... [Read More](https://marketing.coopervisionsec.com/blog/give-your-child-the-competitive-edge) ## [What is Corneal Reshaping?](https://marketing.coopervisionsec.com/blog/what-is-corneal-reshaping) Paragon Vision August 06, 2019 - [Tweet](https://twitter.com/share) [Nearsighted](https://marketing.coopervisionsec.com/blog/topic/nearsighted), [CRT Lenses](https://marketing.coopervisionsec.com/blog/topic/crt-lenses), [Contact Lenses](https://marketing.coopervisionsec.com/blog/topic/contact-lenses), [Orthokeratology](https://marketing.coopervisionsec.com/blog/topic/orthokeratology), [Myopia](https://marketing.coopervisionsec.com/blog/topic/myopia), [Ortho-K](https://marketing.coopervisionsec.com/blog/topic/ortho-k), [corneal refractive therapy](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy), [CRT](https://marketing.coopervisionsec.com/blog/topic/crt) [![](https://marketing.coopervisionsec.com/hubfs/what_is_corneal_reshaping.jpg)](https://marketing.coopervisionsec.com/blog/what-is-corneal-reshaping) When it comes to treating nearsightedness, most people think of corrective lenses such as glasses or conventional daytime contacts. Some may even think of... [Read More](https://marketing.coopervisionsec.com/blog/what-is-corneal-reshaping) [1](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy/page/1) [![CooperVision](https://marketing.coopervisionsec.com/hs-fs/hubfs/Logo_CooperVision-Orange.png?width=900&height=272&name=Logo_CooperVision-Orange.png "CooperVision")](http://coopervisionsec.com) ### SIGNUP FOR OUR NEWSLETTER - [MYOPIA EPIDEMIC](http://paragonvision.com/the-myopia-epidemic/) - [CRT LENSES](http://paragonvision.com/crt-lenses/) - [Find an Eye Doctor](http://paragonvision.com/find-an-eye-doctor/) - [Contact Us](https://marketing.coopervisionsec.com/blog/topic/corneal-refractive-therapy/page/www.paragonvision.com/contact-us/) - [PRACTITIONER LOGIN](http://paragonvision.com/practitioner-login/) - [Privacy Policy (California Users)](https://www.paragonvision.com/ca-privacy-policy/) 2120 W Guadalupe Rd Ste. 112, Gilbert, AZ 85233 US and Canada: [800-528-8279](tel:18005288279)