The Binocular Advantage in Visuomotor Tasks Involving Tools

Read, Jenny C. A.; Begum, Shah Farzana; McDonald, Alice; Trowbridge, Jack

doi:10.1068/i0565

Cited by 33 publications

(33 citation statements)

References 36 publications

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“…With this in mind, the present study constitutes an important first step toward the development of a clinically useful test of dynamic stereoacuity to reflect realworld interactions with depth. [42][43][44][45][46]…”

Section: Discussionmentioning

confidence: 99%

A Systematic Comparison of Static and Dynamic Cues for Depth Perception

Tidbury

Brooks

O’Connor

et al. 2016

Invest. Ophthalmol. Vis. Sci.

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Dynamic disparity information facilitates the extraction of depth in comparison to static disparity signals. This finding may account for the compelling perception of depth reported in individuals with no measurable static stereoacuity. Our findings challenge the traditional definition of stereoblindness and suggest that current diagnostic tests using static stimuli may be suboptimal. We argue that both static and dynamic stimuli should be employed to fully assess the binocular potential of patients when considering management options.

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Section: Discussionmentioning

confidence: 99%

A Systematic Comparison of Static and Dynamic Cues for Depth Perception

Tidbury

Brooks

O’Connor

et al. 2016

Invest. Ophthalmol. Vis. Sci.

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“…Studies involving simple prehensile and buzz-wire tasks have shown a binocular advantage in almost every indicator of performance for stereo-normal participants, concluding that there is a significant loss of visual information associated with monocular viewing. 9 10 …”

Section: Discussionmentioning

confidence: 99%

The effects of absence of stereopsis on performance of a simulated surgical task in two-dimensional and three-dimensional viewing conditions

et al. 2014

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BackgroundStereopsis is believed to be advantageous for surgical tasks that require precise hand-eye coordination. We investigated the effects of short-term and long-term absence of stereopsis on motor task performance in three-dimensional (3D) and two-dimensional (2D) viewing conditions.Methods30 participants with normal stereopsis and 15 participants with absent stereopsis performed a simulated surgical task both in free space under direct vision (3D) and via a monitor (2D), with both eyes open and one eye covered in each condition.ResultsThe stereo-normal group scored higher, on average, than the stereo-absent group with both eyes open under direct vision (p<0.001). Both groups performed comparably in monocular and binocular monitor viewing conditions (p=0.579).ConclusionsHigh-grade stereopsis confers an advantage when performing a fine motor task under direct vision. However, stereopsis does not appear advantageous to task performance under 2D viewing conditions, such as in video-assisted surgery.

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“…For example, Read et al (2013) report that subjects (aged 7–82) performed manual dexterity tasks faster and more accurately with both eyes open than with one eye occluded, but the binocular advantage was not significantly correlated with their stereoacuity. Similarly, Murdoch, McGhee, and Glover (1991) reported that while individuals with no stereopsis have difficulty in performing a task with 3D clues, there are some individuals (post-fellowship ophthalmologists) who “have better manual dexterity than one might anticipate on the basis of stereoacuity testing alone”.…”

Section: Why Does Stereopsis Matter?mentioning

confidence: 99%

Stereopsis and amblyopia: A mini-review

2015

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Amblyopia is a neuro-developmental disorder of the visual cortex that arises from abnormal visual experience early in life. Amblyopia is clinically important because it is a major cause of vision loss in infants and young children. Amblyopia is also of basic interest because it reflects the neural impairment that occurs when normal visual development is disrupted. Amblyopia provides an ideal model for understanding when and how brain plasticity may be harnessed for recovery of function. Over the past two decades there has been a rekindling of interest in developing more effective methods for treating amblyopia, and for extending the treatment beyond the critical period, as exemplified by new clinical trials and new basic research studies. The focus of this review is on stereopsis and its potential for recovery. Impaired stereoscopic depth perception is the most common deficit associated with amblyopia under ordinary (binocular) viewing conditions (Webber & Wood, 2005). Our review of the extant literature suggests that this impairment may have a substantial impact on visuomotor tasks, difficulties in playing sports in children and locomoting safely in older adults. Furthermore, impaired stereopsis may also limit career options for amblyopes. Finally, stereopsis is more impacted in strabismic than in anisometropic amblyopia. Our review of the various approaches to treating amblyopia (patching, perceptual learning, videogames) suggests that there are several promising new approaches to recovering stereopsis in both anisometropic and strabismic amblyopes. However, recovery of stereoacuity may require more active treatment in strabismic than in anisometropic amblyopia. Individuals with strabismic amblyopia have a very low probability of improvement with monocular training; however they fare better with dichoptic training than with monocular training, and even better with direct stereo training.

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The Binocular Advantage in Visuomotor Tasks Involving Tools

Cited by 33 publications

References 36 publications

A Systematic Comparison of Static and Dynamic Cues for Depth Perception

A Systematic Comparison of Static and Dynamic Cues for Depth Perception

The effects of absence of stereopsis on performance of a simulated surgical task in two-dimensional and three-dimensional viewing conditions

Stereopsis and amblyopia: A mini-review

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