Adding personalized wavefront correction to a scleral lens after lens manufacture

All past demonstrations of wavefront-guided scleral lenses have relied on the full-surface method (FSM) of lens manufacture, which requires the wavefront correction to be integrated into the design of a traditional scleral lens prior to lens manufacture. A novel patch-cutting method (PCM) of manufacture would rely on carving the wavefront correction into the anterior surface of a previously manufactured scleral lens. This study compared wavefront corrections manufactured with the FSM and PCM. Two duplicates of four unique wavefront-guided scleral lens designs were manufactured using both the FSM and PCM, resulting in a total of 16 test lenses. All lenses were optically profiled, and comparisons were made between each wavefront-guided lens and its design, its within-method of manufacture duplicate, and across methods of manufacture. This study demonstrated that utilizing the PCM does not induce variability in the manufacturing process beyond what is already observed in the FSM.