Maureen Reed

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Assymmetries of monocular optokinetic nystagmus (OKN) following anomalous visual experience are thought to be due to disruption at the cortical level. Visual disruption usually results from eye suture (in animals), unilateral dense and central cataracts or strabismus (in humans). Many form-deprived animals and humans frequently show a residual strabismus(More)
To investigate the effects of visual disruption on contrast letter thresholds of the non-affected eye, subjects with one eye enucleated, strabismic subjects using the non-deviating eye and normal control subjects were asked to identify letters on eye charts and single letter cards which varied in contrast (between 4 and 96%) and size. At all contrast,(More)
Several reports on monocular optokinetic nystagmus (OKN) in observers with strabismus have found that asymmetry of OKN tends to occur in both eyes of observers with an early onset of strabismus but only in the deviating eye of those with a later onset of strabismus. Our objective was to quantify and compare the magnitude of the OKN asymmetry in each eye as(More)
For normal sighted observers visual performance is often superior on the principal meridians than on the oblique. There has been no clear consensus on whether disruption of the visual system affects performance on orientation sensitivity tasks. Here we compare the abilities of normally sighted subjects tested monocularly, subjects with one eye enucleated(More)
We previously reported that unilaterally eye enucleated subjects show superior contrast letter acuity to normally sighted monocular viewing control subjects. We suggested that reorganization of the visual system in the enucleated subjects may compensate for their loss of binocularity. Here we measured contrast letter acuity in normally sighted binocular(More)
Deficits of motion processing have been reported in individuals with infantile strabismus. Here we examined motion perception in early and late onset strabismic individuals with varying levels of stereo acuity using the Fine Grain Motion Illusion (FGMI). The FGMI is an illusion of motion, where under some conditions, observers report exaggerated motion. It(More)
We investigated retest learning (i.e., performance improvement through retest practice) in the absence of item-specific effects (i.e., learning through memorizing or becoming familiar with specific items) with older adults. Thirty-one older adults (ages 60-82 years, M = 71.10, SD = 6.27) participated in an eight-session self-guided retest program. To(More)
When one sense is unavailable, sensory responsibilities shift and processing of the remaining modalities becomes enhanced to compensate for missing information. This shift, referred to as compensatory plasticity, results in a unique sensory experience for individuals who are deaf, including the manner in which music is perceived. This paper evaluates the(More)
PURPOSE The validity of preschool vision screening has been questioned in the light of the World Health Organization's criteria for determining the validity of screening programs. However, recommendations toward preschool screening have been made by a number of organizations. Given the contrasting views of screening, the purpose of this study was to examine(More)