PURPOSE To evaluate the possible benefits of biometry and ray-tracing intraocular lens (IOL) calculation for aspheric aberration-correcting IOLs. SETTING Private eye clinic in Germany. DESIGN Retrospective consecutive case series. METHODS Eyes with 3 different aberration-correcting IOLs were reviewed. Before surgery, the axial length, corneal thickness, anterior chamber depth, crystalline...

PURPOSE To discuss the use of wavefront measurements generated from the NIDEK OPD-Scan II and OPD-Station for cataract surgery. METHODS Case examples are presented along with information and relevant clinical data obtained from the OPD-Scan II aberrometer and OPD-Station software. All eyes underwent corneal topography, wavefront aberrometry, autorefraction, keratometry, and pupillometry measu...

As a result of modern technological advances, cataract surgery can be seen as not only a rehabilitative operation, but a customized procedure to compensate for important sources of image degradation in the visual system of a patient, such as defocus and some aberrations. With the development of new materials, instruments and surgical techniques in ophthalmology, great progress has been achieved...

by Elsev A healthy 60-year-old woman had uneventful bilateral sequential cataract surgery with diffractive multifocal intraocular lens (IOL) implantation. Immediately after surgery in the first eye, the patient complained of right monocular oscillopsia during motion. Surgery in the second eye was followed by the same symptoms. Ocular motility was normal. Any movement of head or eye was accompan...

Background: The present study aimed to evaluate and compare the efficacy of toric intraocular lens (IOL) implantation aspheric IOL with steep-axis incision for correcting mild moderate corneal astigmatism in cataract patients.

PURPOSE To expand a geometrical model of diffraction efficiency and its interpretation to the multifocal optic and to introduce formulas for analysis of far and near light distribution and their application to multifocal intraocular lenses (IOLs) and to diffraction efficiency optimization. SETTING Medical device consulting firm, Newport Coast, California, USA. DESIGN Experimental study. M...

First-order and multi-order diffractive lenses are implemented using a LCoS modulator with 8π-phase modulation range for a 514nm operation wavelength. Their performance is compared in terms of energy efficiency in the first and zero order diffractive planes. The influence of the display calibration is evaluated for each phase modulation range. Keywords—diffractive optical element; spatial light...

ANALYSIS OF INTERNAL ASTIGMATISM AND HIGHER ORDER 1 ABERRATIONS IN EYES IMPLANTED WITH A NEW DIFFRACTIVE 2 MULTIFOCAL TORIC INTRAOCULAR LENS 3 4 5 Peter Mojzis MD, PhD, FEBO 6 David P. Piñero, PhD 7 Vera Ctvrteckova MD 8 Iva Rydlova, MD 9 10 From: 11 Eye Department, Regional Hospital, Havlickuv Brod, Czech Republic 12 Eye clinic of Jessenius Faculty of Medicine in Martin, Slovakia 13 Departamen...

PURPOSE To compare higher order aberrations (HOA) in AcrySof SN60AT and Acrysof IQ SN60WF intraocular lenses (IOLs) and natural crystalline lenses in an age-matched population. METHODS Sixty-nine eyes of 55 patients were examined. Group I included AcrySof spheric lenses, group II AcrySof aspheric lenses, and group III included patients with the natural crystalline lens. The HOA data were obta...

Multifocal intraocular lenses (MFIOL) enable good near and far vision after cataract surgery. Excellent results with cataract patients encouraged ophthalmologists to implant MFIOL after clear lens extraction (CLE). There are two types of MFIOL: diffractive and refractive. In our prospective study we compared clinical outcomes after CLE and bilateral implantation of diffractive (Tecnis Multifoca...