Corneal Refractive Therapy (CRT), also called orthokeratology or ortho-k, is the therapeutic process of wearing specially designed contact lenses that gently alter the curvature of the cornea to temporarily correct myopia (typically effective up to -6.00D)
Importance of Correcting Myopia:
1. High levels of myopia double the risk of serious ocular health problems such as retinal detachment, cataracts, and glaucoma, which can lead to vision loss and blindness later in life
2. Even less severe myopia increases the risk of retinal detachment, cataracts, and glaucoma
3. The risk of retinopathy for high myopes increases with age, especially over 40 years of age. The risk of developing retinopathy is significantly reduced if a patient’s myopia is eliminated or reduced during childhood and early adolescence
Modern non-surgical contact lens corneal reshaping is achieved by wearing oxygen-permeable Contact Lenses that gently reshape the cornea overnight.
Studies have shown that corneal reshaping may slow the progression of childhood myopia.
Paragon CRT® Contact Lenses were the first corneal reshaping designs approved for overnight wear by the United States Food and Drug Administration (FDA) in 2002 for use in patients of all ages.
With Paragon CRT® Contact Lenses patients typically experience significant visual improvement after the first night of wear. The average transition and treatment period is 7 to 14 days.