Paragon Corneal Refractive Therapy or Paragon CRT corrects your vision using a similar method to LASIK eye surgery but without surgery. CRT utilizes highly specialized gas permeable contact lenses which are worn while you sleep to gently change the shape of your eyes. CRT lenses need to be worn nightly to maintain the corrected shape of your eyes similar to a retainer after braces. In addition to freeing you from glasses or daytime contacts, CRT has been proven to drastically or completely slow the progression of nearsightedness in children and adults. This decrease in progression of nearsightedness only occurs once you begin to wear CRT lenses therefore the younger a child begins wearing CRT lenses the better. For further information on CRT lenses including clinical studies, news broadcasts, and informative videos, please visit crtvision.com.