The eye is a relatively poor quality optical system due to aberrations such as astigmatism, spherical aberration, and coma. Improvements in measurement of aberration and lathing technology mean it is clinically feasible to measure the wavefront aberration of the human eye and order a custom contact lens designed to correct the higher order aberrations of the eye. These lenses could be made on a monthly disposable basis.

Dr Ian Cox BOptom PhD FAAO is a Distinguished Research Fellow at Bausch & Lomb in Rochester, New York. Since 1998, Ian has been collaborating with Dr David Williams at the Center for Visual Science at the University of Rochester on the role of ocular aberrations in visual performance and their correction with contact lenses and refractive surgery.

Successful completion of the multiple choice test is worth 2 CET points. This CET is approved for optometrists and contact lens opticians.