Effect of a Low Dose of Alcohol on Dynamic Visual Acuity

1994 ◽  
Vol 78 (3) ◽  
pp. 963-967 ◽  
Author(s):  
Masaru Miyao ◽  
Hirohiko Ishikawa ◽  
Mitsuaki Ito ◽  
Pern Chian Teo ◽  
Masashi Furuta ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Low Dose ◽  
Dynamic Visual Acuity ◽  
Before And After ◽  
Low Volume ◽  
The Relationship

An experiment was carried out to investigate the relationship between dynamic visual acuity and a low dose of alcohol. For the study, 18 subjects ranging from 18 to 25 years of age were chosen. The subjects' dynamic visual acuities were compared before and after drinking 16.5 ml of alcohol, the amount in one standard can of beer. It was found that the acuity improved 30 min. after consuming this low volume of alcohol.

The Relationship between Driver Vision and Accident Involvement

1977 ◽  
Vol 21 (6) ◽  
pp. 553-557
Author(s):  
David Shinar
Keyword(s):  
Visual Acuity ◽  
Age Groups ◽  
Detection Sensitivity ◽  
Dynamic Visual Acuity ◽  
Accident Rate ◽  
Low Levels ◽  
And Performance ◽  
Screening Device ◽  
The Relationship ◽  
Potential Use

A battery of eight different driver-related vision tests was administered to a sample of 890 licensed drivers. The battery included tests for static acuity under both normal illumination, low-level illumination and glare conditions; dynamic visual acuity; movement detection sensitivity, both in the central and peripheral fields; visual field in the horizontal axis; and visual search effectiveness. Regression analyses performed to determine the relationship between accident rate and performance on the tests in the vision test battery, yielded significant multiple correlations ranging from R = .09 to R = .30, depending upon the driver age-group and specific measure used for accident rate (daytime accident rate vs. nighttime accident rate). Different vision tests were found to be differentially predictive of accident rate for different age groups. In general, static acuity under low levels of illumination and dynamic visual acuity were most consistently related to accident rate. The potential use of such a battery as a flexible screening device is discussed.

scholarly journals Improvement of Binocular Summation in Intermittent Exotropia Following Successful Postoperative Alignment

2020 ◽  
Author(s):  
YUEPING LI ◽  
Juan Ding ◽  
Wei Zhang
Keyword(s):  
Visual Acuity ◽  
Binocular Summation ◽  
Intermittent Exotropia ◽  
Low Contrast ◽  
Central Fusion ◽  
Before And After ◽  
Group A ◽  
Group B ◽  
Relationship Of ◽  
The Relationship

Abstract Purpose: To investigate the improvement of binocular summation (BiS) for the high (100%) contrast and different low contrasts (10%, 5%, 2.5%) and the relationship of BiS with stereopsis and central fusion in patients with intermittent exotropia (IXT) after strabismic surgeries.Design: Prospective studyParticipants: Seventy-six patients with IXT aging 9 to 40 years with poor control at distance before strabismus surgeries. Methods: To analyze preoperative and postoperative BiS records and the proportions of patients with different BiS for the high (100%) contrast and the low contrasts (10%, 5%, 2.5%). The score of visual acuity (log Mar) was recorded when patient recognizing the full line with full refraction correction. BiS was classified into three situations depending on whether binocular visual acuity (BVA) was better, worse or equal to that of the better-seeing eye . The results of distant random dots stereograph(RDS) were grouped into A, unable to recognize; B, moderate, 200”≤RDS≤400” and C, good, RDS<200”.Results: The patients with binocular summation were increased from 9.2% to 40.8% for 100%contrast, from 17.1% to 53.9% for 10% contrast, from 21.1% to 76.1% for 5% contrast, from 21.1% to 72.4% for 2.5% contrast after surgeries, respectively. Tested using 2.5% contrast, (1) more patients presented binocular summation in the groups B and C ; (2) postoperative improvements of BVA in group B(1.5±1.03 lines) and group C (1.57±1.26 lines) differed significantly with that in the group A (0.74±1.00 line); (3)more patients presented binocular summation and the improvement of BVA was 1.43±1.16 lines in the group with central fusion after surgeries.Conclusions: BiS for high contrast and different low contrasts can be improved in IXT after successful surgical treatment. It may be associated with obtaining central fusion, recovering stereopsis at distance and good alignment after the surgeries. BiS for 2.5% contrast was improved significantly and sensitive to the good stereopsis and central fusion. Improvement of BiS, particularly for low contrast, has benefit for the daily activities in the real environment. BiS could be as supplementary assessment of binocular function for the patients with IXT before and after treatment.

Pengaruh derajat kelainan refraksi dan penggunaan kacamata koreksi terhadap ketajaman stereopsis pada anak

2019 ◽  
Vol 43 (1) ◽  
pp. 63
Author(s):  
Dian Hidayati ◽  
Noor Syamsu ◽  
Marliyanti N Akib
Keyword(s):  
Visual Acuity ◽  
Refractive Error ◽  
Inclusion Criteria ◽  
Kendall’S Tau ◽  
Cross Sectional ◽  
Kendall's Tau ◽  
Good Visual Acuity ◽  
Before And After ◽  
The Relationship ◽  
Better Than

Introduction : The stereoacuity depends on the binocular cooperation of both eyes and the good visual acuity of each eye. The relationship between stereoacuity and visual acuity is stereoacuity will decrease if the visual acuity decreases. Method : This study is a cross-sectional analytic study, conducted in elementary schools in Makassar for 3 months. There were 261 children who met the inclusion criteria consisting of 124 men (47.5%) and 137 women (52.5%). The degrees of refractive error were divided into mild, moderate, and severe degrees. Measurement of stereoacuity using Titmus Stereotest before and after the use of corrective glasses. Result : The results showed a significant correlation between the degree of refractive abnormality with stereoacuity before corrective glasses based on Kendall’s tau b = 0.313 (p <0.001), whereas the more severe of the degrees of the refractive error, the worse the stereoacuity . There is a significant correlation between the degrees of refractive error and stereoacuity after corrective glasses based on Kendall’s tau b = 0.235 (p <0.001), whereas the more severe of the degrees of the refractive error, the worse stereoacuity. There were significant differences in stereoacuity to the degrees of refractive error before and after the use of corrective glasses based on McNemar statistical test (p <0.001). Conclusion : The more severe of the degrees of the refractive error, the worse the stereoacuity. Stereoacuity after the use of corrective glasses is better than before the use of corrective glasses.

EFFECT OF A LOW DOSE OF ALCOHOL ON DYNAMIC VISUAL ACUITY

1994 ◽  
Vol 78 (3) ◽  
pp. 963-967 ◽  
Author(s):  
MASARU MIYAO ◽  
HIROHIKO ISHIKAWA ◽  
MITSUAKI ITO ◽  
PERN CHIAN TEO ◽  
MASASHI FURUTA ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Low Dose ◽  
Dynamic Visual Acuity

Effect of vestibular rehabilitation on passive dynamic visual acuity

2008 ◽  
Vol 18 (2-3) ◽  
pp. 147-157
Author(s):  
Matthew Scherer ◽  
Americo A. Migliaccio ◽  
Michael C. Schubert
Keyword(s):  
Visual Acuity ◽  
Exercise Program ◽  
Home Exercise ◽  
Dynamic Visual Acuity ◽  
Gaze Stabilization ◽  
Ocular Reflex ◽  
Gaze Stability ◽  
Before And After ◽  
Vestibulo Ocular Reflex ◽  
Head Impulses

While active dynamic visual acuity (DVA) has been shown to improve with gaze stabilization exercises, we sought to determine whether DVA during {passive} head impulses (pDVA) would also improve following a rehabilitation course of vestibular physical therapy (VPT) in patients with unilateral and bilateral vestibular hypofunction. VPT consisted of gaze and gait stabilization exercises done as a home exercise program. Scleral search coil was used to characterize the angular vestibulo-ocular reflex (aVOR) during pDVA before and after VPT. Mean duration of VPT was 66 ± 24 days, over a total of 5 ± 1.4 outpatient visits. Two of three subjects showed improvements in pDVA with a mean reduction of 43% (LogMAR 0.58 to 0.398 and 0.92 to 0.40). Our data suggest improvements in pDVA may be due in part to improvements in aVOR velocity and acceleration gains or reduced latency of the aVOR. Each subject demonstrated a reduction in the ratio of compensatory saccades to head impulses after VPT. Preliminary data suggest that active gaze stability exercises may contribute to improvements in pDVA in some individuals.

Dynamic Visual Acuity and Coincidence-Anticipation Timing by Experienced and Inexperienced Women Players of Fast Pitch Softball

2000 ◽  
Vol 90 (2) ◽  
pp. 498-504 ◽  
Author(s):  
Duane G. Millslagle
Keyword(s):  
Visual Acuity ◽  
Analysis Of Variance ◽  
Dynamic Visual Acuity ◽  
Significant Difference ◽  
The Mean ◽  
Variable Errors ◽  
The Relationship

This study examined the relationship between dynamic visual acuity and coincidence-anticipation timing in 16 inexperienced and 16 experienced women's fast pitch Softball players. Pearson-product correlations indicated a low relationship between dynamic visual acuity and coincidence-anticipation timing. The correlations for dynamic visual acuity and coincidence anticipation between experienced and inexperienced dynamic visual acuity were not significant. A significant difference was found between the mean dynamic visual acuity of the two groups, i.e., experienced players had better dynamic visual acuity than inexperienced players. Analysis of variance of constant errors, variable errors, and absolute errors of coincidence anticipation indicated no significant differences between groups or across the three accuracy scores. The interaction between experience and accuracy was not significant.

Enhancing Spatial Ability Through Sport Practice

2012 ◽  
Vol 33 (2) ◽  
pp. 83-88 ◽  
Author(s):  
David Moreau ◽  
Jérome Clerc ◽  
Annie Mansy-Dannay ◽  
Alain Guerrien
Keyword(s):  
Mental Rotation ◽  
Spatial Representations ◽  
Mental Rotation Test ◽  
Sport Training ◽  
Sport Practice ◽  
Undergraduate University Students ◽  
Before And After ◽  
Cognitive Plasticity ◽  
Reported Data ◽  
The Relationship

This experiment investigated the relationship between mental rotation and sport training. Undergraduate university students (n = 62) completed the Mental Rotation Test ( Vandenberg & Kuse, 1978 ), before and after a 10-month training in two different sports, which either involved extensive mental rotation ability (wrestling group) or did not (running group). Both groups showed comparable results in the pretest, but the wrestling group outperformed the running group in the posttest. As expected from previous studies, males outperformed women in the pretest and the posttest. Besides, self-reported data gathered after both sessions indicated an increase in adaptive strategies following training in wrestling, but not subsequent to training in running. These findings demonstrate the significant effect of training in particular sports on mental rotation performance, thus showing consistency with the notion of cognitive plasticity induced from motor training involving manipulation of spatial representations. They are discussed within an embodied cognition framework.

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