By Merrick Moseley BSc PhD, Alistair Fielder MD
This booklet offers a precis and synthesis of present concerns and examine in the box of 1 of the main difficult paediatric eye stipulations - Amblyopia.
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Extra resources for Amblyopia: A Multidisciplinary Approach, 1e
Not only is there discord between the animal and human work, there is also no agreement between the various neuroimaging studies. g. , 1998; for reviews see Blakemore, 1990; Movshon and Kiorpes, 1990). , 1988). , 1999,2001). , 1999). In this chapter I hope to provide a coherent explanation for these disparate results, and in so doing determine whether or not area V I is the earliest site of dysfunction within the amblyopic visual system of humans. My conclusions are based largely on the results obtained using MEG.
They examined two deprivation amblyopes, one anisometropic amblyope and one strabismic amblyope. All had a monocular acuity deficit of 6/60 or less. Their stimulus was a non-patterned stroboscopic light, flashing at a temporal frequency of 8 Hz. The level of cortical activity observed in area VI following monocular stimulation of each subject's amblyopic eye was reduced in comparison with their normal-eye responses. However, the interocular difference in cortical activation was small, and varied between subjects.
A. and Hess. R. F. (1993). Contour integration by the human visual system: evidence for a local 'association field'. • 33, 173-93. Fronius, M. and Sireteanu, R. (1989). Monocular geometry is selectively distorted in the central visual field of strabismic amblyopes. lnv. Ophthalmol. Vis. • 30, 2034-44. Fronius, M, and Sireteanu. R. (1992). Localization disorders in squint amblyopia: horizontal line bisection and relative vertical localization. Klin. Monats. • 201, 22-9. Gingras. G.. Mitchell. D.
Amblyopia: A Multidisciplinary Approach, 1e by Merrick Moseley BSc PhD, Alistair Fielder MD