We describe the use of power vector analysis in quantifying the amount of lens rotation and assesing the subsequent correction in a case of rotated Artiflex toric phakic intraocular lens (pIOL) (Ophtec BV, Netherlands). A 33 year old patient was corrected by bilateral implantation of Artiflex toric pIOLs for high myopia and astigmatism. Two months after the surgery the patient reported worse vi...

Purpose. To assess refractive and visual outcomes and patient satisfaction of wavefront-guided photorefractive keratectomy (PRK) in eyes with myopia and compound myopic astigmatism, with the ablation profile derived from a new Hartmann-Shack aberrometer. Methods. In this retrospective study, 662 eyes that underwent wavefront-guided PRK with a treatment profile derived from a new generation Hart...

purpose : to evaluate the correlation of central corneal thickness (cct) with refractive error and keratometry in a group of patients eligible for laser keratorefractive surgery, which may serve as a bias in studies on intraocular pressure (iop) measurement methods : in a cross sectional observational study, the right eyes of 340 patients who underwent laser keratorefractive surgery during the ...

he future of laser refractive surgery is exciting with the potential for ever-improved postoper-ative visual performance. In the past, the operative goal has been 20/20 uncorrected visual acuity with zero residual refractive error. Criteria for a successful procedure are no longer 20/40 or better with ±1.00 diopter (D) of residual refractive error, because neither surgeons nor patients are sati...

Background: Refractive error is defined as a status of refraction. They happen when the shape your eye keeps light from focusing correctly on retina (a light-sensitive layer tissue in back eye). errors are most common type vision problem but many don’t know that they could be seeing well.Methods: This study was cross sectional hospital-based 197 children carried out ophthalmology department Era...

PURPOSE The aim of this systematic review was to synthesize and appraise the evidence of the benefits of presbyopic correction on the cornea for visual function. SUMMARY Comprehensive search was conducted in MEDLINE using keywords like "presbylasik", "presbyopic refractive surgery", "corneal pseudoaccommodation" and "corneal multifocality". We reviewed corrected and uncorrected visual acuitie...

purpose : to assess the visual and refractive outcomes after implantation of toric implantable collamer lens (t-icl) in compound myopic astigmatism methods : in this prospective study, 28 eyes with manifest refraction spherical equivalent (mrse) errors of -10.94±4.09 diopter (d) and mean cylindrical errors of -3.47±1.39 d underwent t-icl implantation. six months after surgery, best corrected an...

PURPOSE The aim of this study was to assess the effectiveness of the Verion-LenSx guided arcuate incision technique to reduce refractive astigmatism in a pseudophakic population. PATIENTS AND METHODS A prospective single-arm study was conducted in which one or both eyes of subjects required reduction of 1.0-2.0 D of refractive astigmatism after previous cataract surgery or refractive lens exc...