Modern orthokeratology uses specially designed reverse geometry gas permeable (GP) ortho-k shaping lenses worn during sleep. This overnight wearing process provides a faster, more predictable result than early ortho-k attempts as practiced in the 1980s using conventional, rigid contact lenses fitted incrementally flatter. Using this vision shaping technique, properly selected patients can go through the day wearing no correction and enjoy excellent visual acuity.

Vision Shaping Treatment (VST) Process
With Bausch + Lomb Vision Shaping Treatment (VST), you use custom-designed shaping lenses to reshape your patients' corneas overnight, so they're able to enjoy clear, crisp vision throughout the day -- without glasses, contact lenses, or surgery.