According to some embodiments of the invention, lens thickness is set to approximately 0.23 mm at the center of the lens. This prevents lens flexure and ensures mold rigidity. Edge thickness is calculated and adjusted for patient comfort by trial and error. The contact lenses described herein prefer ably comprise known high or hyper DK gas permeable mate rials that are approved by the Federal Drug Administration for use in overnight wear. As would be appreciated by those of ordinary skill in the art, many other types of lenses may be employed without departing from the scope of the present invention. Thus, it is seen that rigid orthokeratological contact lenses and methods for prescribing the same are provided. While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not of limitation. Likewise, the various diagrams may depict example configu rations for the invention, which is done to aid in understand ing the features and functionality that may be included in the invention. The invention is not restricted to the illustrated example configurations, but the desired features may be implemented using a variety of alternative configurations. Indeed, it will be apparent to one of skill in the art how alternative configurations may be implemented to implement the desired features of the present invention. Additionally, with regard to flow diagrams and method claims, the order in which the steps are presented herein shall not mandate that various embodiments be implemented to perform the recited functionality in the same order unless the context dictates otherwise. It is noted that equivalents for the particular embodiments discussed in this description may practice the invention as well.