Biomaterial Database

Effect of induced blur on visual acuity and stereoacuity. 1991

W L Larson, and M Bolduc

School of Optometry, University of Montreal, Quebec, Canada.

The acuities of three subjects with good visual acuity and stereoacuity were reduced by the addition of diffusing filters placed before one or both eyes; these subjects then underwent automated stereoacuity and visual acuity tests. Results were idiosyncratic and differed from subject to subject to such an extent that no general rule sufficed to describe the effect of different degrees of blur on visual acuity and stereoacuity. It had been thought that blur degraded stereoacuity more than visual acuity but most of the results from one subject indicated the opposite effect. The effects of monocular vs. binocular blur are discussed.

UI	MeSH Term	Description	Entries
D005556	Form Perception	The sensory discrimination of a pattern, shape, or outline.	Contour Perception,Contour Perceptions,Form Perceptions,Perception, Contour,Perception, Form,Perceptions, Contour,Perceptions, Form
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014792	Visual Acuity	Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.	Acuities, Visual,Acuity, Visual,Visual Acuities
D015348	Vision, Binocular	The blending of separate images seen by each eye into one composite image.	Binocular Vision
D015349	Vision, Monocular	Images seen by one eye.	Monocular Vision,Monovision
D015357	Vision Disparity	The difference between two images on the retina when looking at a visual stimulus. This occurs since the two retinas do not have the same view of the stimulus because of the location of our eyes. Thus the left eye does not get exactly the same view as the right eye.	Binocular Disparity,Fixation Disparity,Ocular Disparity,Parallax, Ocular,Retinal Disparity,Visual Disparity,Binocular Disparities,Disparities, Binocular,Disparities, Fixation,Disparities, Ocular,Disparities, Retinal,Disparities, Vision,Disparities, Visual,Disparity, Binocular,Disparity, Fixation,Disparity, Ocular,Disparity, Retinal,Disparity, Vision,Disparity, Visual,Fixation Disparities,Ocular Disparities,Ocular Parallax,Retinal Disparities,Vision Disparities,Visual Disparities