Random Dot E Stereotest underestimates stereopsis at high test distances

Zhao, Lingzhi; Wu, Huang

doi:10.1111/cxo.13055

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…A three-dimensional (3D) laptop [ASUS G750Y47JX, 17.3" 16:9 full HD 3D (1,920×1,080 120 Hz), ASUSTEK Computer Inc., Taiwan] equipped with NVidia 3D glasses (Expressway Santa Clara, CA, USA) was utilized as the test system, which we had used previously ( 32 , 33 ). The dot pitch of the screen was 0.199 mm, which signifies that a one-pixel distance would create 10 seconds of arc (arcsec, ”) at a checking distance of 4.1 m ( Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Evaluating the relationship between induced aniseikonia and distance stereopsis

Liu¹,

Xu²,

Guo³

et al. 2023

Ann Transl Med

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Background: The impact of aniseikonia on stereopsis has been studied for decades, however, inconsistency which may be partly attributed to the method of inducing aniseikonia exists among these findings. This study aimed to induce overall and meridional aniseikonia using a three-dimensional (3D) computer and then evaluate the effect of induced aniseikonia on distance stereopsis using contour-based and random-dot-based patterns.Methods: A 3D laptop was used to produce all of the test symbols. Unlike the usual method of creating aniseikonia with size lenses, which would change not only the size but also the relative position of the test symbols in the two images as seen by the two eyes, a new test system was designed to evaluate the aniseikonia, which only modified the size while maintaining the relative position of the test symbols. This new method reduced the disparities induced by location changing of the paired test targets when inducing aniseikonia. Aniseikonia was induced overall or in one of the meridians. The induced meridional aniseikonia included 180°, 30°, 45°, 60°, and 90°, respectively. The range of induced aniseikonia was 0-30% with an increment of 5%.Results: Overall magnification affected stereopsis more than magnification in any one of the meridians.The stereoacuity differences between oblique meridians (30°, 45°, and 60°) were not significant until the aniseikonia increased up to 20%. The difference between 180°, 45°, and 90° was significant when the aniseikonia increased up to 10% in the contour-based test and over 20% in the random-dot-based test. The stereoacuity trend was improved gradually, coupled with the angle changing from 180º to 90º in the contourbased pattern, and deteriorated gradually in the random-dot-based pattern.Conclusions: Overall aniseikonia affected stereopsis more than meridional aniseikonia. The stereoacuity of the contour-based pattern was superior to that of the random-dot-based pattern in the 90° meridian, while the opposite result was obtained in the 180° meridian.

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Section: Methodsmentioning

confidence: 99%

Evaluating the relationship between induced aniseikonia and distance stereopsis

Liu¹,

Xu²,

Guo³

et al. 2023

Ann Transl Med

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“…These evaluations are often designed to be straightforward, rapid, and effortless to administer, facilitating healthcare professionals in assessing a patient's binocular vision and diagnosing potential visual disorders. Instruments employed for this purpose include the Titmus Fly Stereotest [2], TNO Stereotest [3,4], Randot Stereotest [5][6][7], Frisby Stereotest [8], and Lang Stereotest [9]. These tests are routinely utilized in clinical settings to assess stereopsis, identify visual disorders, and track treatment progress.…”

Section: Introductionmentioning

confidence: 99%

Comparison of stereopsis thresholds measured with conventional methods and a new eye tracking method

Liu,

Yu,

et al. 2023

PLoS ONE

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Purpose Stereopsis is the ability to perceive depth using the slightly different views from two eyes. This study aims to conduct innovative stereopsis tests using the objective data outputted by eye tracking technology. Methods A laptop and an eye tracker were used to establish the test system. Anaglyphic glasses were employed to execute the stereopsis assessment. The test symbol employed was devised to emulate the quantitative measurement component of the Random Dot 3 Stereo Acuity Test. Sub-pixel technology was used to increase the disparity accuracy of test pages. The tested disparities were: 160″, 100″, 63″, 50″, 40″, 32″, 25″, 20″, 16″, and 12.5″. The test was conducted at a distance of 0.65m. Conventional and eye tracking stereopsis assessments were conducted on 120 subjects. Wilcoxon signed-rank test was used to test the difference, while the Bland-Altman method was used to test the consistency between the two methods. Results The Wilcoxon signed-rank test showed no significant difference between conventional and eye tracking thresholds of stereopsis (Z = −1.497, P = 0.134). There was a high level of agreement between the two methods using Bland- Altman statistical analysis (The 95 per cent limits of agreement were −0.40 to 0.47 log arcsec). Conclusions Stereoacuity can be evaluated utilizing an innovative stereopsis measurement system grounded in eye tracking technology.

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Random Dot E Stereotest underestimates stereopsis at high test distances

Cited by 2 publications

References 10 publications

Evaluating the relationship between induced aniseikonia and distance stereopsis

Evaluating the relationship between induced aniseikonia and distance stereopsis

Comparison of stereopsis thresholds measured with conventional methods and a new eye tracking method

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