PRK (Photo Refractive Keratectomy) is a laser correction procedure whereby the clear layer of surface skin (the epithelium) is removed to access the corneal stroma (the bed) where laser reshaping can be performed. This is used in cases where the patient does not want a corneal flap, has a thinner cornea, or needs a special procedure because of past surgery/disease/trauma. The patient still gets all the benefit of topographic guided ablation, Contoura with LYRA Protocol, with the potential to create a supranormal, more uniform human cornea. This increases the potential for higher resolution vision, better than 20/20 vision, and minimization of halos and night glare.
Recovery After Contoura PRK
The laser correction is still the same as with LASIK and the visual endpoint will also be the same over time, but the healing time is longer as the epithelium grows back over 3-5 days. During this time the patent may continue normal activities such as using a computer, watching TV, doing normal, light activities, going shopping, and even going to the movies. Doctors don’t recommend driving during that time and advise avoiding any activity that could get dirt, sweat, or contaminants in the eye. After about a week there is no physical limitation for the patient.
We also perform a specialized version of PRK called Transepithelial PRK. This procedure utilizes corneal epithelial thickness mapping to determine how much epithelial compensation is present for corneal higher order aberrations/irregularity. We use this data to guide epithelial removal by excimer laser. This is followed by Contoura topographic guided ablation to create a virtually perfect, uniform cornea. This can be used in corneal reconstructive repairs of past surgical procedures, disease, and trauma as significant epithelial compensation can occur and mask the true extent of the corneal irregularity. Dr. Motwani is also using it with his LYRA Protocl. it to create a virtually perfect cornea for the best possible vision. Dr. Motwani has had this procedure performed on himself as part of his research work.