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PURPOSE To determine the impact of decentration and tilt on the imaging quality of aspheric intraocular lens (IOL) designs in a schematic model eye. SETTING Institute of Medical Physics, University of Erlangen-Nuremberg, Erlangen, Germany. METHOD A model eye was used to calculate the impact of misalignment on the imaging quality of 6 IOL designs. The(More)
PURPOSE Visual sensations in patients with blindness and retinal degenerations may be restored by electrical stimulation of retinal neurons with implantable microelectrode arrays. A prospective trial was initiated to evaluate the safety and efficacy of a wireless intraocular retinal implant (EPIRET3) in six volunteers with blindness and RP. METHODS The(More)
PURPOSE To assess corneal asphericity (Q) and evaluate potential factors influencing the shape of the anterior corneal surface. SETTING Medical Optics Research Group, Institute of Medical Physics, University of Erlangen-Nuremberg, Erlangen, Germany. METHODS In this cross-sectional consecutive study, 3 topographic measurements were taken. Eyes were(More)
BACKGROUND Intrastromal insertion of Krumeich's corneal ring between graft and residual host corneal tissue appears to impair preripheral, superficial and superfluous vascularization of donor corneal tissue. OBJECTIVES The purpose of this study was to investigate the cytotoxic effects of Krumeich's ring using tissue cultures composed of primary human(More)
PURPOSE To compare the surface reflections in a pseudophakic model eye with and without a monofocal additional refractive intraocular lens (add-on IOL). SETTING Department of Ophthalmology, Rudolf-Virchow-Klinikum Glauchau, Glauchau, and Experimental Ophthalmology, Saarland University, Homburg, Germany. DESIGN Experimental study. METHODS The Liou and(More)
Overhead lines are essential components of high voltage power systems worldwide. The performance of this network element is important for a save and reliable transmission of electrical energy. The load capability of a line is related basically to the line design itself and takes centre stage of the economic operation whereas the sag behaviour and the(More)
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