Sylvia Henke-Fahle

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PURPOSE Normal observers and patients with apparent disease usually are tacitly expected to yield homogeneous thresholds in clinical tests of visual perception. The authors tested this assumption. METHODS Through training of 70 observers, performance and improvement of performance were tested for different hyperacuity tasks using psychophysical tests. (More)
PURPOSE To determine the potential of adenovirally transduced bone marrow stromal cells (BMSCs) to differentiate into retinal pigment epithelial-like cells and to evaluabe possible rescue effects after transplantation into the retinas of Royal College of Surgeons (RCS) rats. METHODS Through a high-capacity adenoviral vector expressing either green(More)
In the laboratory, thresholds for stereoscopic depth perception are usually determined by asking observers to discriminate between a stimulus with a given depth offset and its mirror image. Threshold is most often defined as the disparity difference that yields 75% or 83% correct responses. Disparities used for clinical tests of stereopsis are much higher.(More)
Following a review of various tricks and techniques described in the literature for measuring the visual acuity of less cooperative patients, three new methods are presented. The first is based on the so-called "preferential-looking" method, which has been in use for several years to determine the visual acuity of infants and small children. The second(More)
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