Open Your Eyes

Ongoing studies and research continue to evaluate long-term effectiveness and improve the safety of Paragon CRT® Contact Lenses. At this time, orthokeratolgy with Paragon CRT® Contact Lenses is not clinically proven to control the long-term progression of myopia.

“Stabilizing Myopia by Accelerated Reshaping Technique”

SMART, a five-year study initiated in 2009, is currently evaluating the effect of corneal reshaping on myopia progression in 138 patients. At one-year follow-up, subjects wearing corneal reshaping lenses exhibited a mean progression of 0.00D, compared to an average of 0.50D in the control group. ? The SMART study revealed in 2011 at the Global Specialty Lens Symposium in Las Vegas, Nevada (GSLS), that both the test group and the control group of soft contact lens wearers had the same safety findings.
Source: Daniels K. Consider OrthoK for Myopia Control.

Review of Optometry. 2012 July 15.

The Contact Solution NASA Space Shuttle Missions: The Secret to Overnight Success

While it may sound like science fiction, the technology that makes Paragon CRT® Contact Lenses possible is here today thanks to some out-of-this-world research. In 1993 NASA joined forces with Paragon Vision Sciences of Mesa, Arizona, to study the production of polymers in the weightlessness of space. Free from the effects of gravity, scientists hoped their experiments would lead to a process that could improve the purity of premium-performance polymers necessary for making contact lenses. By unleashing contact lens materials in microgravity, they believed they could better understand how polymers — the molecules that make up plastics — are formed.

During three Space Shuttle missions from 1993 to 1996, astronauts conducted experiments in the SPACEHAB pressurized research laboratory as it rested in the Orbiter’s cargo bay. Through this research, they were able to identify ways to form more permeable materials that allow oxygen to reach the cornea, which are ideal for extended-wear contact lenses.
Back on Earth, the results enabled Paragon Vision Sciences to develop an improved synthesis process that first led to HDS® (Hyperpurified Delivery System) contact lenses. These gas-permeable rigid lenses do not contain water like soft contacts, are resistant to deposits and less likely than soft contact lenses to harbor bacteria. Since they are rigid, they are also easier to handle, retain their shape, and provide crisper vision. The U.S. Food and Drug Administration approved these lenses for continuous wear of up to seven days.

While the HDS® lenses improve vision as they are worn, the next step in the technology was to use these materials to construct a contact that could temporarily improve vision after it had been removed from the eye. In other words, it would actually reshape the cornea while the wearer slept.

Leveraging what it learned from NASA’s experiments, Paragon Vision Sciences developed Corneal Refractive Therapy. Paragon CRT® Contact Lenses are the first therapeutic lens design approved by the FDA for overnight use to temporarily reduce nearsightedness. Wearers insert the Paragon CRT® Contact Lenses at night, removing them in the morning. The result is clearer, natural vision lasting all day, possibly eliminating the need for daytime contacts or glasses.

This technology now provides a non-surgical alternative for those who want to be free of glasses and contacts without undergoing laser-corrective surgery. In studies, 65 percent of the patients using the Paragon CRT® Contact Lenses achieved 20/20 vision. More than 93 percent achieved 20/32 vision or better — exceeding driving requirements in most states.2

More than 10,000 eye care practitioners worldwide are now certified to prescribe the lenses for Orthokeratology, with tens of thousands of consumers now enjoying the benefits of this remarkable technology born in space.

For more information on this amazing research, check out the following articles:

National News Articles Featuring CRT®

Schedule Your Appointment Today

Find a Certified Paragon CRT® Contact Lens Eye Care Professional Near You

Find a Doctor