Most cataract surgery patients desire to not only enjoy excellent nonspectacle corrected distant vision, but also non-corrected near vision with glasses independence in this modern era. The implantation of accommodative IOLs may achieve this vision after cataract surgery according to the literature [2]. However, the price of the accommodative IOLs is about ten times more than the standard IOL. ...

OBJECTIVE To record the MR imaging features of primary central nervous system lymphoma (PCNSL) and compare these features in monofocal and multifocal disease. MATERIALS AND METHODS Twenty-one cases of monofocal disease were compared to five cases of multifocal disease. All patients were examined by non-enhanced and contrast-enhanced MRI. Tumor location, tumor size, signal intensity, enhanceme...

purpose: to record the mri features of primary central nervous system lymphoma (pcnsl) and compare these properties in monofocal and multifocal disease. methods: eleven cases of monofocal disease were compared to 9 cases of multifocal disease. all patients were examined by non-enhanced and contrast-enhanced mri. tumor location, signal intensity, enhancement characteristics, age distribution, pe...

PURPOSE To evaluate mesopic visual acuity and visual quality as measured by objective scatter index (OSI) in pseudophakic eyes with long-term follow-up after implantation of hydrophobic acrylic lenses made from two different lens materials. SETTING This study was carried out in a private clinic. DESIGN This study was an observational cohort study. METHODS This pilot study included 181 eye...

PURPOSE To determine the energy distribution between the distance and near images formed in a model eye by spherical and aspheric apodized diffractive multifocal intraocular lenses (IOLs). METHODS The IOL was inserted in a model eye with an artificial cornea with positive spherical aberration (SA) similar to that of the human cornea. The energy of the distance and near images, as a function o...

The function of the central core in lenses of certain schizochroal-eyed trilobites is unknown. To understand the possible optical function(s) of this central core, we performed computational ray-tracing on the lens in the schizochroal compound eyes of a Silurian Dalmanites trilobite. We computed the intensity of light focused by the lens versus the distance from the lower lens surface along the...

Author(s): Schallhorn, Julie M | Abstract: PurposeTo review and compare the results of unpublished premarket approval studies for recent multifocal extended depth focus (EDOF) intraocular lenses.MethodsLenses without previously published pre-market trials were identified clinical patient-reported outcomes reviewed compared.ResultsLenses included DFT/DAT (Acrysof Vivity) EDOF lens, TFNT/TFAT (Pa...