Search results for "Distance correction"

showing 3 items of 3 documents

Differences in visual performance of AcrySof ReSTOR IOL in high and low myopic eyes.

2009

PURPOSE To determine the differences in refractive and visual results obtained in eyes with high and low myopia after multifocal intraocular lens (IOL) implantation. METHODS Monocular visual acuity for distance and near, with and without distance correction, and photopic and mesopic contrast sensitivity were measured at 6 months after surgery in 152 myopic eyes implanted with the AcrySof ReSTOR Natural (SN60D3) IOL. Two groups were created: high and low myopia (76 eyes in each). RESULTS Monocular best distance-corrected visual acuity was 0.02+/-0.06 logMAR for low myopes and 0.05+/-0.09 logMAR for high myopes. Monocular best distance-corrected near visual acuity was 0.04+/-0.05 and 0.07+/-0…

AdultMalemedicine.medical_specialtyVisual acuitygenetic structuresPseudophakiaMesopic visionmedia_common.quotation_subjectProsthesis DesignRefraction OcularSeverity of Illness IndexContrast Sensitivity03 medical and health sciences0302 clinical medicineLens Implantation IntraocularOphthalmologymedicineMyopiaContrast (vision)HumansProspective Studiesmedia_commonAgedLenses IntraocularMonocularbusiness.industryGeneral MedicineMultifocal intraocular lensMiddle AgedDistance correctioneye diseasesOphthalmologyTreatment Outcome030221 ophthalmology & optometryFemalesense organsSpatial frequencymedicine.symptombusiness030217 neurology & neurosurgeryPhotopic visionEuropean journal of ophthalmology
researchProduct

In vitro power profiles of multifocal simultaneous vision contact lenses.

2013

Abstract Purpose To evaluate the power profile of multifocal contact lenses (CLs) using a new technology based on quantitative deflectometry. Methods The Nimo TR1504 was used to analyze the power distribution of multifocal CLs. The CLs under study were: Air Optix Aqua Multifocal Low, Medium and High Addition and Focus Progressives. Three lenses of each model were considered. Results All multifocal CLs showed a power profile characterized by a change toward more positive power values when aperture sizes become smaller. The near refractive addition of the lenses under study was +2.61 D, +1.44 D, +1.30 D and +0.30 D for the Focus Progressives, the Air Optix Aqua Multifocal High, Medium Add and…

PhysicsLightbusiness.industryApertureContact LensesOptical powerGeneral MedicinePresbyopiaEquipment Designmedicine.diseaseDistance correctionlaw.inventionPower (physics)Lens (optics)Equipment Failure AnalysisOphthalmologyRefractometryOpticslawmedicineScattering RadiationbusinessFocus (optics)OptometryNominal power (photovoltaic)Contact lensanterior eye : the journal of the British Contact Lens Association
researchProduct

Reading ability with 3 multifocal intraocular lens models.

2006

Purpose To prospectively evaluate reading performance with of 3 types of multifocal intraocular lenses (IOLs) under different lighting conditions based on reading acuity and reading speed tests. Setting Augenklinik, Bad Hersfeld, Germany. Methods This randomized study comprised 60 cataract patients (120 eyes) randomly assigned to receive an SA40N IOL (AMO) (Group 1, 20 patients), Tecnis ZM001 IOL (AMO) (Group 2, 20 patients), or AcrySof ReSTOR SA60D3 IOL (Alcon) (Group 3, 20 patients). Pupil size and reading ability at near (visual acuity, reading speed) without correction, with best distance correction, and with best near correction were assessed 6 weeks postoperatively under low-light con…

medicine.medical_specialtyVisual acuitygenetic structuresLightPseudophakiamedicine.medical_treatmentmedia_common.quotation_subjectEye diseaseVisual AcuityIntraocular lensContrast SensitivityLens Implantation IntraocularOphthalmologyReading (process)medicineHumansProspective Studiesmedia_commonLenses IntraocularPhacoemulsificationbusiness.industrySignificant differencePupil sizePupilMultifocal intraocular lensMiddle Agedmedicine.diseaseDistance correctioneye diseasesSensory SystemsOphthalmologyReadingOptometrySurgerysense organsmedicine.symptombusinessJournal of cataract and refractive surgery
researchProduct