Orthokeratology (Ortho-K) is the use of hard contact lenses, normally worn only at night, to gradually improve vision through the reshaping of the cornea. This method can be used as an alternative to LASIK by those desiring to not have to wear lenses during the day.
History
The idea of correcting vision by reshaping the cornea has been around for a while, and even practiced by a few doctors for decades. However, due to a lack of FDA approval for overnight wear, the method was not very appealing.
In June of 2002, the FDA granted approval of the overnight wear of a type of corneal reshaping called Corneal Refractive Therapy, or CRT. Two years later, the FDA approved a brand of ortho-k contact lenses.
Types of lenses
There are several types of lenses used for orthokeratology. All use special gas permeable lenses to reshape the cornea. The lens material is important for maintaining eye-health during the treatment.
Corneal Refractive Therapy
Orthokeratology Lenses are made by several companies, using one of two FDA approved technologies. The lenses may be fit by the practitioner, or by the companies specialists.
Ortho-k
Ortho-k offers a variety of lens brands and designs. Two brands of ortho-k lenses have been approved by the FDA for overnight wear and studies are underway for other lens designs.
Costs
Corneal reshaping through orthokeratology generally costs about $1,000 to $1,500 for both eyes, depending on your practitioner. However, this does not include the additional cost of lenses each year.
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