Download Amblyopia: A Multidisciplinary Approach, 1e by Merrick Moseley BSc PhD, Alistair Fielder MD PDF

By Merrick Moseley BSc PhD, Alistair Fielder MD

This booklet presents a precis and synthesis of present concerns and study in the box of 1 of the main hard paediatric eye stipulations - Amblyopia.

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Additional resources for Amblyopia: A Multidisciplinary Approach, 1e

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Two conical visual systems. In: Analysis of Visual Behavour (D. J. Ingle. ), pp. 549-86. MIT Press. 3 Functional neuroimaging in amblyopia Stephen J. Anderson INTRODUCTION Historically there have been two main approaches to understanding cortical function in amblyopia: single cell studies on animals, and behavioural studies on animals and humans. Given that the sensory brain is organized into functionally discrete areas, a measure of cortical function that falls somewhere between these two approaches should be useful - in other words, a technique that provides a measure of neural activity from groups of cells with similar functional properties.

Global field power plots. 6. were calculated for a range of stimulus periodicities. By plotting the maximum field power as a function of stimulus periodicity. we derived a measure of the spatial frequency response properties of the activated cortical area. 7 shows the results for six amblyopes. The tuning functions for the normal (closed symbols) and amblyopic eyes (open symbols) of each subject were bandpass. peaking at 1-2 c/deg with a cut-off near 4 c/deg. Note that the 5 8 JD 4 KC -'-n:6/6 -<>_.

18 Results for contour detection in a group of strabismic amblyopes. Percent correct contour detection is plotted against the contour curvature for the normal (unfilled circles symbols) and fel/ow amblyopic eye (filled circles symbols). , 1997). 38 Amblyopia: A Multidisciplinary Approach AT LEAST TWO TYPES OF AMBLYOPIA We generally talk about amblyopia as a single entity, but there is now ample evidence to suggest that strabismic and non-strabismic forms may be different. I have already mentioned three important differences; blur perception, contrast perception and positional accuracy.

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