and it has been shown that the curvature of the cornea is thereby flattened to a degree which places the focus further back in the eye, hopefully near the retinal surface. Such an operation has been demonstrated to improve vision by reducing objective myopia, with a measured improvement of up...
collagen orientation in full-thickness keratoconus corneas, received a great deal of interest from the scientific community and prompted the following question: how does collagen orientation change as a function of tissue depth when the anterior curvature of the cornea is abnormal, as in keratoconus?
Presence of abnormal elevation on the back corneal surface was reported as a primary sign of early ectatic change in keratoconus and may be used in the differential diagnosis of keratoconic corneas from normal corneas; however, its effectiveness in detecting subclinical forms of keratoconus has not...
Either PRK or LASIK procedures were performed on 168 eyes using the Summit apex plus excimer laser. Topographic abnormalities, including apex displacement (AD), increased asphericity (AS), meridional irregularity (MI), increased inferior-superior asymmetry (IS), increased curvature (CU), and combined...