This clinical case provides a classic example of the limitations of the Zernike series to characterize the typical deformation of the ocular wavefront after LASIK surgery of hyperopia and presbyopia (« presby-LASIK »). Although the concept of using higher order aberrations such as negative spherical aberration to increase the ocular multifocality is well accepted, there has been […]

Presbyopia & hyperopia correction can be done using corneal asphericity (Q value) and multifocality as with the READ approach, implemented in the excimer laser EX500 (Alcon Wavelight)