In the myopic eye (difficulty seeing at a distance), light focuses in front of the retina, making distant objects appear blurry. When eyeglasses or daytime contacts are worn, light is focused on the retina so you can see clearly.
Today, CRT Brand Contact Lenses provides an option for patients with nearsightedness. CRT lenses correct nearsightedness, with or without low to moderate astigmatism, by gently and safely reshaping the cornea while you sleep. When CRT lenses are removed in the morning, the treated cornea allows light to focus on the retina. The result is clear, natural vision for your waking hours. And yes, if you get up during the night, CRT lenses will enable you to see clearly with the lenses on!"