Figure 6-1 Wavefront analysis depicting higher-order aberrations after laser in situ keratomileusis (LASIK), including coma and trefoil. (Courtesy of Steven I. Rosenfeld, MD.) Pallikaris IG, Kymionis GD, Panagopoulou SI, Siganos…
This chapter reviews the fundamental corneal properties relevant to refractive surgery (focusing on keratorefractive procedures), corneal imaging for refractive surgery, and the effects of keratorefractive surgery on the cornea. It…
Figure 5-1 Schematic representations of corneal recontouring by the excimer laser. A, Correction of myopia by flattening the central cornea. B, Correction of hyperopia by steepening the central corneal optical…
Figure 9-1 Schematic representation of the Helmholtz theory of accommodation, in which contraction of the ciliary muscle during accommodation (bottom) leads to relaxation of the zonular fibers. The reduced zonular…
Because accurate testing results are crucial to the success of refractive surgery, the refractive surgeon must closely supervise office staff members who are performing the various tests (eg, corneal topography…
Figure 7-1 Schematic representation of an eye undergoing conductive keratoplasty, which delivers radiofrequency energy to the cornea through a handheld probe inserted into the peripheral cornea. (Courtesy of Refractec, Inc.)…
