Excimer lasers and high technology instrumentation have ushered in a new era of vision improvement surgery in Hawaii, replacing the more traditional forms of refractive surgery: cataract surgery, corneal transplant surgery, and radial keratotomy. Corneal surgery has been enhanced by new techniques of microsurgery and a more effective tissue procurement system for donor corneal tissue. Several l...

INTRODUCTION Refractive surgery is considered a safe and effective method for correction of refractive errors in adults. OBJECTIVE To report an unusual case of a young child with partially accommodative esotropia presenting with deterioration of vision and worsening of esotropia following refractive surgery. CASE REPORT Unanticipated and progressive irregular corneal astigmatism along with ...

FEBRUARY 2011 CATARACT & REFRACTIVE SURGERY TODAY EUROPE 17 C ataract surgery has transitioned from a standardized, lens-based procedure to refractive surgery. This evolution has required the assembly of different parts, like a puzzle, to optimize postoperative distance and near UCVA. New phaco platforms, instruments, and IOLs, along with the new techniques and the right attitude, have enabled ...

purpose : to analyze the correlation of ocular higher-order aberrations (hoas) and mesopic pupil size (mps) with age and gender in myopic patients screened for refractive surgery methods : ocular hoas and mps were examined in 1,641 females eyes and 749 males eyes with myopia and also in two different age groups, under 30-year-old (1,675 eyes) and over 30-year-old (715 eyes), using the zywave ab...

PURPOSE We classified the Orbscan anterior elevation maps in normal eyes (under myopic, emmetropic and hyperopic conditions) and in those after myopic refractive surgery. We did this classification to demonstrate how Orbscan anterior elevation maps are useful in screening for the existence and extent of previous myopic refractive surgery. Such a classification can help clinicians interpret preo...

SEPTEMBER 2010 CATARACT & REFRACTIVE SURGERY TODAY EUROPE 35 T he introduction of wavefront-sensing techniques to ophthalmology has redefined the clinical meaning of refractive error. Now, all imperfections in the components and materials within the eye that cause light rays to deviate from their desired path are referred to as optical aberrations. Lower-order aberrations (defocus and astigmati...

This chapter describes current surgical techniques used to correct myopia, including laser correction (laser surgeries), incisional techniques, intrastromal corneal rings, phakic intra‐ ocular lenses, and refractive lensectomy.

H uman eyes are capable of six types of movement: x/y lateral shifts, z levelling, horizontal and vertical rotations, and cyclotorsion (rotation around the optical axis). Current laser technology for refractive surgery creates corneal alterations to correct refractive errors more accurately than in the past.1 Ablation profiles are based on the removal of tissue lenticules through sequential las...

SEPTEMBER 2010 CATARACT & REFRACTIVE SURGERY TODAY EUROPE 25 A stigmatism is an optical defect that may lead to shadowing, loss of contrast sensitivity, distortion, blurred vision, and ghosting. There are two types of astigmatism, regular and irregular. Irregular astigmatism is often caused by a corneal scar or scattering in the crystalline lens. It is estimated that astigmatism of more than -0...