Topic
Foveal
About: Foveal is a research topic. Over the lifetime, 2652 publications have been published within this topic receiving 94120 citations.
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Journal Article•
TL;DR: For instance, this paper found that the glaucoma group demonstrated significantly higher foveal vernier acuity thresholds than control subjects for the blue-on-yellow stimulus and frequency-doubling grating stimulus.
Abstract: RESULTS. The glaucoma group demonstrated significantly higher foveal vernier acuity thresholds than control subjects for the blue-on-yellow stimulus (P 0.002) and frequencydoubling grating stimulus (P 0.001). No significant difference in vernier acuity between groups was found for the 90% contrast achromatic dots (P 0.09), however a significant difference was found for the normalized contrast targets (P 0.04). CONCLUSIONS. Vernier acuity tasks can be used to demonstrate abnormal foveal function in glaucoma. Testing with visualfunction–specific stimuli may be effective in identifying such dysfunction. Vernier acuity, or other similar hyperacuity tasks that assess spatial sampling, may be useful in the detection of early glaucomatous damage, before it is detected with traditional perimetric tests. (Invest Ophthalmol Vis Sci. 2002;43: 1393–1399)
28 citations
TL;DR: Turning off a fixation point prior to or coincident with the appearance of a visual target reduces the latency of saccades to that target, and saccadic reaction time was reduced in the Gap relative to 0-Gap condition irrespective of the type of fixation anchor.
28 citations
Patent•
28 Jan 1992
TL;DR: In this article, a vision training device for improving hand-eye coordination is presented, which takes the form of eyewear having two red colored, translucent lenses, each lens containing a clear target sight positioned and dimensioned to allow a trainee to focus the image of an object onto the foveal vision areas of his eyes through the apertures while simultaneously stimulating the rod vision of the eye by exposure to light in the red spectrum.
Abstract: A vision training device, useful for improving hand-eye coordination activities, takes the form of eyewear having two red colored, translucent lenses, each lens containing a clear target sight positioned and dimensioned to allow a trainee to focus the image of an object onto the foveal vision areas of his eyes through the apertures while simultaneously stimulating the rod vision of the eye by exposure to light in the red spectrum.
28 citations
22 Mar 2010
TL;DR: It is shown that wearing an HMD leads to less eye rotation and requires more head movements than under blinders conditions and during normal viewing, and that the contribution of eye rotation to lateral shifts of attention is calculated.
Abstract: Head-mounted displays (HMDs) that use a see-through display method allow for superimposing computer-generated images upon a real-world view. Such devices, however, normally restrict the user's field of view. Furthermore, low display resolution and display curvature are suspected to make foveal as well as peripheral vision more difficult and may thus affect visual processing. In order to evaluate this assumption, we compared performance and eye-movement patterns in a visual search paradigm under different viewing conditions: participants either wore an HMD, had their field of view restricted by blinders or could avail themselves of an unrestricted field of view (normal viewing). From the head and eye-movement recordings we calculated the contribution of eye rotation to lateral shifts of attention. Results show that wearing an HMD leads to less eye rotation and requires more head movements than under blinders conditions and during normal viewing.
28 citations
TL;DR: The notion that pursuit is not exclusively a foveal function is strengthened, as the initial eye acceleration during smooth pursuit initiation eliciting by an imaginary target decreased in comparison to the acceleration elicited by a real target.
28 citations