Binocular Balance
Binocular Balance - Related Videos
06:15
Binocular Rivalry
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Why do people have two forward-facing eyes? By presenting the brain with two ever so slightly different images it becomes possible to comprehend visual problems that are far more difficult to process through a single eye. Chief among these is the problem of 3-D perception, seeing the world in three dimensions, despite retinal inputs in only two dimensions. What happens if each eye receives two completely different images? That...
14:34
How to Create and Use Binocular Rivalry
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Cited by 72 •
2010
Binocular rivalry occurs when the eyes are presented with different images at the same location: one image dominates while the other is suppressed, and dominance alternates periodically. Rivalry is useful for investigating perceptual selection and visual awareness. Here we describe several easy methods for creating and using binocular rivalry stimuli.
05:14
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
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2025
The binocular wavefront optometer agrees well with traditional refraction techniques in both objective and subjective refraction measurements, offering superior accuracy and clinical utility. Its standardized protocol reduces optometrist workload and provides a more accurate refractive assessment for post-refractive surgery individuals.
08:25
A Battery of Quantitative Binocular Vision Tests for Adults: Testing Protocols
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2026
Here we present a comprehensive battery of tasks to assess binocular vision. Tasks include peripheral stereoacuity and motion-in-depth, which are not assessed by current clinical tests. Incorporating these tasks will provide an in-depth assessment of an individual’s binocularity.
07:03
Assessment of Motor Balance and Coordination in Mice using the Balance Beam
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Cited by 395 •
2011
Deficits in fine motor coordination can be assessed with the balance beam test. Performance on the beam is quantified by the speed at which the beam is traversed and the number of times the mouse slips on the beam.
FAQs
Accommodation can influence the visual demand placed on each eye during refraction. If accommodative responses are not reduced or controlled, the comparison between the eyes may not accurately reflect their distance correction needs. Binocular balance therefore incorporates techniques that reduce accommodation before comparing clarity, helping the practitioner refine prescriptions for more comfortable coordinated vision.
These approaches provide different ways to control viewing conditions during the comparison of both eyes. Controlled fogging reduces accommodative effort, while alternate occlusion and prism dissociation help separate or manage the visual input reaching each eye. Used during binocular viewing, they allow clinicians to compare clarity while limiting accommodation from distorting the assessment.
The process becomes particularly relevant when the eyes have different refractive errors or show unequal accommodative responses. In these situations, one eye may contribute differently to binocular viewing, potentially affecting comfort or stability. Assessing the eyes together after determining their individual prescriptions can help identify whether refinement is needed for coordinated visual performance.
Practitioners first determine the prescription of each eye separately. They then use a controlled binocular procedure, such as fogging, alternate occlusion, or prism dissociation, to reduce accommodation and compare the clarity contributed by both eyes. The findings can guide refinement of the corrective-lens prescription rather than replacing the initial monocular measurements.
The assessment uses controlled viewing conditions in which both eyes can be considered together while accommodation is reduced. Depending on the examination approach, the practitioner may apply fogging, alternate occlusion, or prism dissociation, then compare the clarity of the two eyes. These conditions are designed to make the binocular comparison more consistent and clinically useful.
A successful assessment can help refine corrective-lens prescriptions when unequal refractive error or accommodative response may interfere with comfort. Its clinical value lies in supporting more stable binocular visual performance and potentially limiting eyestrain. For that reason, binocular balance contributes to comprehensive eye examinations rather than functioning as an isolated measurement.