Influences of monocular and binocular vision on postural stability

Wu, Kuo Tung; Lee, Guo She

doi:10.3233/ves-150540

Cited by 13 publications

(13 citation statements)

References 22 publications

(21 reference statements)

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“…There was little evidence for binocular inhibition when the monocular acuity in the two eyes were unequal. 9 This research suggested that binocular acuity and the better eye monocular acuity had a high correlation (r=0.920, P<0.001); both of them could evaluate reading acuity (r=0.827, P<0.001; r=0.862, P <0.001), binocular acuity exhibited higher correlation than monocular acuity in the better eye.Also, there were differences between monocular acuity in the better eye and binocular acuity (Z=-23.025, P<0.05) at the level of a=0.05. For a significant portion of this elderly population, binocular performance was not well represented by better eye monocular measures.…”

Section: Discussionmentioning

confidence: 71%

Effects of Binocular Acuity in Visual Impairment Assessment

Wu¹

2015

ijSciences

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Objective: To study the correlations and differences between best corrected visual acuity in the better eye (hereinafter referred to as monocular acuity in the better eye) and binocular acuity after both eyes were best corrected separately (hereinafter referred to as binocular acuity), the relationship between both monocular acuity in the better eye and binocular acuity and reading acuity as well as reading speed were discussed in order to investigate the effect of binocular acuity in visual impairment and visual disability assessment. Methods: Two thousand a hundred and fifteen subjects ranging in age from 18 to 40 years old were recruited for the study, whose best corrected monocular acuity were less than or equal to 0.8, and other visual functions examined were normal. Best corrected visual acuity was measured monocularly and binocularly using Standard Logarithm Distance Charts. Reading visual acuity and reading speed were also determined. Experimental data were statistically analyzed using SPSS19.0 statistical software. Results: Monocular acuity in the better eye and binocular acuity was linear correlation (r=0.920, P<0.001), and the differences of them were statistically significant (Z=-23.025, P<0.05); Reading acuity and both monocular acuity in the better eye and binocular acuity were also linear correlation (r=0.827, P<0.001; r=0.862, P <0.001); Reading acuity deteriorated with aggravation of visual impairment.There were no differences of reading speed in visual impairment individuals that more than or equal to 0.3; However ,reading speed in visual disability (visual acuity was less than 0.3) individuals were slowed down significantly. Conclusions: Both of monocular acuity in the better eye and binocular acuity could estimate visual function preferably. There were also differences between both of them. In view of people are simultaneously using both eyes in daily life, it is suggested that the visual function of binocular acuity was recommended in the evaluation of judicial forensic visual impairment and visual disability.

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Section: Discussionmentioning

confidence: 71%

Effects of Binocular Acuity in Visual Impairment Assessment

Wu¹

2015

ijSciences

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“…Binocular vision disorders can generate postural adaptations to maintain binocularity and achieve visual comfort. In a literature review, we found authors who affirmed the influence that binocular vision has on posture [16,37,[42][43][44][45][46]. Prior research concluded that convergence seems to significantly enhance postural stability [10][11][12].…”

Section: Discussionmentioning

confidence: 99%

Visual Binocular Disorders and Their Relationship with Baropodometric Parameters: A Cross-Association Study

Sánchez-González

Gutiérrez-Sánchez

Piñero-Pinto

et al. 2020

BioMed Research International

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The aim of this study was to establish a relationship between nonstrabismic binocular dysfunction and baropodometric parameters. A total of 106 participants underwent binocular vision assessment by evaluating horizontal heterophoria, horizontal and vertical fusional vergence ranges, and vergence facility. Posturography was measured using the FreeMED baropodometric platform. Among the variables that the software calculates are foot surface, foot load, and foot pressure. Our results showed that in the participants with positive fusional vergence (PFV) (near) blur and recovery values outside the norm, there are statistically significant differences between the total foot area (p<0.05), forefoot area (p<0.05), forefoot load (p<0.05), and rearfoot load (p<0.05), in all of the cases of left foot vs. right foot. In the group of subjects who did not meet Sheard’s criterion (distance), that is, those with unstable binocular vision, there was a statistically significant difference (p<0.01) between maximum left and right foot pressure. In conclusion, our results establish a relationship between nonstrabismic binocular dysfunctions and some baropodometric parameters.

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“…Most previous studies did not investigate the effect of visual acuity in the worse eye. Wu et al compared the posture stability by measuring the total track length and surface area of center of pressure of body sway between with one eye close or both eye open, and reported that one eye close significantly increase the posture instability [ 25 ]. These results suggest that worse BCVA in the worse eye increase posture sway, may result in increased risk of falling.…”

Section: Discussionmentioning

confidence: 99%

“…Coleman et al reported that subjects with history of frequent falling is five times more likely to experience multiple fall in a large sample prospective study [ 24 ]. In the Salisbury eye evaluation, subjects with history of falls is two times more likely to fall in a population based prospective study [ 25 ]. In agreement with these studies, our current study suggested that previous history of falls was a risk factor for future fall in subjects with POAG.…”

Section: Discussionmentioning

confidence: 99%

Factors associated with the occurrence of a fall in subjects with primary open-angle glaucoma

et al. 2017

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BackgroundThe aim of the study is to investigate risk factors for future falls in subject with primary open angle glaucoma (POAG).MethodsAll participants answered the following question at their baseline ophthalmic examination: Have you had any falls in the last year? (Yes/No). All study participants answered the same question every 12 months for 3 years. The means of total deviation values in the whole, superior peripheral, superior central, inferior central, and inferior peripheral visual fields (VF) were calculated. The relationship between these mean VF measurements, and various clinical factors against patients’ future falls was analyzed using multiple linear regression.ResultsTwo-hundred ninety four POAG patients answered the baseline and follow-up fall questionnaires over a period of three years. Among 294 subjects, 69 patients experienced a fall during the three-year follow-up. History of falls at baseline (coefficient = 1.22), history of fear of falling at baseline (0.53), best corrected visual acuity in the worse eye (7.37), prevalence of diabetes mellitus (0.60), prevalence of systemic hypertension (0.53) were selected in the optimal model.ConclusionsVisual acuity in the worse eye, history of falls, fear of falling, diabetes mellitus, and systemic hypertension are risk factors for falling in subjects with POAG.Electronic supplementary materialThe online version of this article (10.1186/s12886-017-0613-1) contains supplementary material, which is available to authorized users.

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Influences of monocular and binocular vision on postural stability

Cited by 13 publications

References 22 publications

Effects of Binocular Acuity in Visual Impairment Assessment

Effects of Binocular Acuity in Visual Impairment Assessment

Visual Binocular Disorders and Their Relationship with Baropodometric Parameters: A Cross-Association Study

Factors associated with the occurrence of a fall in subjects with primary open-angle glaucoma

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