A major story of the last 2 decades of the 20th century has been the emergence of refractive surgery. Initially extremely controversial, with modest predictability and debatable safety and long-term stability, surgical modification of corneal curvature has come to be well accepted by the profession and the public. The number of these procedures that will be performed in 2000 may exceed 1.5 mill...

FEBRUARY 2012 CAtARACt & REFRACtivE SURgERY todAY 39 A lthough much has been written on the topic, there is no universally accepted treatment for presbyopia. Therapies range from bifocal spectacles to scleral expansion to accommodating IOLs to corneal procedures such as presbyLASIK or conductive keratoplasty. An intrastromal approach is currently being investigated in FDA clinical studies for t...

JUNE 2010 CATARACT & REFRACTIVE SURGERY TODAY EUROPE 23 A s we reported in the Journal of Cataract and Refractive Surgery,1 use of a thick intrastromal corneal ring segment (ICRS) may enhance the surgical effect in patients with keratoconus. Although commercially available ICRSs are limited in thickness, one can achieve the effect of thicker segments by stacking two within a single intrastromal...

PURPOSE To evaluate the effect of refractive surgery on intraocular lens (IOL) power calculation, compare methods of IOL power calculation after refractive surgery, evaluate the effect of pre-refractive surgery refractive error on IOL deviation, review the literature on determining IOL power after refractive surgery, and introduce a formula for IOL calculation for use after refractive surgery f...

PURPOSE To determine the efficacy, stability, and predictability of refractive surgery for hyperopia using four different procedures: photorefractive keratectomy (PRK), laser in situ keratomileusis (LASIK), implantation of a phakic intraocular lens (PIOL), and removing the transparent lens with IOL implantation. METHODS We operated on 184 eyes with hyperopia; 56 eyes had less than +2.00 D (lo...

Refractive surgery, par excellence, is the ophthalmic surgery of the end of the millennium. This type of surgery is performed mostly for non-sight threatening conditions; it frequently involves high technology such as lasers and computers; the great majority of this type of surgery is done in the developed world; patients have very high expectations of the surgery and want very detailed explana...

OCTOBER 2008 I CATARACT & REFRACTIVE SURGERY TODAY I 53 I n late 1999, IntraLase Corp. (now owned by Advanced Medical Optics, Inc., Santa Ana, CA) obtained a 510k clearance for its beta 6-kHz femtosecond laser to create LASIK flaps.1,2 The power of subsequent models increased to generation 1 (10 kHz),3,4 generation 2 (15 kHz),5 generation 3 (30 kHz),6,7 generation 4 (60 kHz)8 and, in April 2008...