All contact lenses alter the shape of the corneal surface. It takes a while for the cornea’s natural shape to return once contact lens wear is discontinued. It is imperative that we accurately measure the cornea’s natural shape in order to properly treat your refractive error. Failure to do so can result in unexpected and undesirable refractive outcomes. Soft contacts cannot be worn for at least 2 weeks before your procedure. Toric lenses and rigid gas permeable (RGP) lenses should not be worn for at least 3 weeks before your procedure. You may wear contact lenses prior to your free refractive screening, but avoid them on the day of your screening. You can expect to be out of your contact lenses a total of 2-3 weeks prior to the procedure.