cTEN Custom Transepithelial No touch surgery, all laser PRK - A State of Sight #87

The cTEN procedure is a variation of transepithelial PRK where the surface layers of the cornea are removed with a laser before corrective surgery. Watch this episode of A State of Sight with Isaac Porter, MD to learn more about this operation which can help smooth and normalize irregular corneas.

Since the outer covering of the cornea (epithelium) continuously divides and replaces itself, it can fill in areas of irregularity. If these outer layers are removed with a laser along with some of the nearby inner layers, a more even surface may be created.

Instead of using wavefront or refractive measurements like other types of LASIK or PRK, the cTEN procedure is guided by a corneal topography map to create a more even curvature.