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Many people don't know that daytime-wear contact lenses and LASIK surgery aren't the only alternatives to wearing glasses for vision correction. People with myopia who don't want surgery but need a different solution to glasses or contacts should look into Paragon CRT as a potential way to achieve better vision.


Corneal refractive therapy, or CRT, is a vision therapy that involves wearing a gas permeable hard contact lens to reshape the wearer's cornea. The lenses are worn overnight during sleep, resulting in a temporary reshaping of the cornea, leaving the wearer with improved vision for the next day. Corneal reshaping isn't new technology, but the success of therapies in the past depended on the current lens technology. Current therapies last for about 72 hours after lens removal. Some people experience corrected vision for an even longer period, but the prescribed way to use CRT lenses is every night to ensure you get the correct reshaping and vision correction.


crt eyeImage via Flickr by schani

Older children, especially those who play sports or engage in activities where glasses are inconvenient or limiting, can be good candidates for CRT. Contact lenses worn by children during the day can be more dangerous for because dirt and other debris can get in their eyes. With CRT, parents can completely monitor lens wear, leaving the child with better vision during the daytime. CRT is also an attractive option for adults who need good vision without being hampered by lenses or glasses; many careers in the arts, athletics, and even law enforcement may benefit from corrected vision via CRT. Adults who simply don't want to go through the hassle of contacts and glasses every day should look at CRT as an alternative option, since the lenses are worn at night during sleep and come out each morning.


crt lensImage via Flickr by Lee J Haywood

Only mild to moderate myopia can be treated with CRT. If your vision correction prescription is higher than -6 diopters, you aren't a good candidate for current CRT. Astigmatism up to -1.75D can be treated as well. When you begin CRT treatment, it can take 10 to 14 days to achieve the full range of vision improvement that you can expect. During that time, you'll see better than your old prescription but may still need some form of vision correction for the first week or two. The eye doctor will be able to provide solutions during this adjustment period. Wearing contact lenses comes with low risks, but CRT lenses do not carry any risks not associated with typical gas-permeable lens wear. Some patients may experience vision changes later in the day, because CRT is not a permanent vision correction solution. Others may not be able to achieve vision correction adequate to cease the use of other methods, like glasses. CRT is a great solution for many with myopia. Unfortunately, the technology isn't as well-known as daytime wear contacts and LASIK surgery. Ask your eye doctor if CRT is right for you.

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