Guide to Vision Surgery

Advantages of wavefront LASIK

As optical irregularities, aberrations have two main types: lower order aberrations such as nearsightedness and astigmatism and higher order aberrations that can not be corrected by eyeglasses. Examples of higher order aberrations include spherical aberration and coma.

Wavefront measurements for higher-order aberrations

Currently, most of the doctors change the lenses with different powers in front of the patient and get his response, in order to get the exact prescription. In fact, the result is based on the patient’s subjective feeling. New wavefront technology can automatically identify vision errors from the way light waves travel through the eye, which is objective. Wavefront measurements can also provide more information than conventional eyeglasses or contacts prescription. Actually, wavefront-guided LASIK can provide sharper vision than conventional LASIK. It is estimated that wavefront measurement will replace conventional prescriptions.