A comparison of stereopsis testing between red/green targets and polarized targets in children with normal binocular vision

Yamada, Taro; Scheiman, Mitchell; Mitchell, G. Lynn

doi:10.1016/j.optm.2007.05.013

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…Simons and Elhatton 41 showed that anaglyph glasses introduce artefacts in binocular vision testing. Yamada et al 42 specifically compared anaglyph and polarized versions of both global and local stereopsis tests. They found good agreement between both types of glasses in the screening tests for global stereopsis, Random Dot Letter E and Random Dot Butterfly.…”

Section: Discussionmentioning

confidence: 99%

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Overestimation of stereo thresholds by the TNO stereotest is not due to global stereopsis

Vancleef

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Herbert

et al. 2017

Ophthalmic Physiologic Optic

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PurposeIt has been repeatedly shown that the TNO stereotest overestimates stereo threshold compared to other clinical stereotests. In the current study, we test whether this overestimation can be attributed to a distinction between ‘global’ (or ‘cyclopean’) and ‘local’ (feature or contour‐based) stereopsis.MethodsWe compared stereo thresholds of a global (TNO) and a local clinical stereotest (Randot Circles). In addition, a global and a local psychophysical stereotest were added to the design. One hundred and forty‐nine children between 4 and 16 years old were included in the study.ResultsStereo threshold estimates with TNO were a factor of two higher than with any of the other stereotests. No significant differences were found between the other tests. Bland‐Altman analyses also indicated low agreement between TNO and the other stereotests, especially for higher stereo threshold estimates. Simulations indicated that the TNO test protocol and test disparities can account for part of this effect.DiscussionThe results indicate that the global – local distinction is an unlikely explanation for the overestimated thresholds of TNO. Test protocol and disparities are one contributing factor. Potential additional factors include the nature of the task (TNO requires depth discrimination rather than detection) and the use of anaglyph red/green 3D glasses rather than polarizing filters, which may reduce binocular fusion.

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Section: Discussionmentioning

confidence: 99%

“…Simons and Elhatton showed that anaglyph glasses introduce artefacts in binocular vision testing. Yamada et al . specifically compared anaglyph and polarized versions of both global and local stereopsis tests.…”

Section: Discussionmentioning

confidence: 99%

Overestimation of stereo thresholds by the TNO stereotest is not due to global stereopsis

Vancleef

Read

Herbert

et al. 2017

Ophthalmic Physiologic Optic

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“…Wirt circles) where test features can be seen both monocularly and binocularly . Anaglyph tests may induce artefacts such as chromatic imbalances that could lead to underestimates of stereoacuity, especially when testing contour stereoacuity . Although Larson found local stereoacuity with red‐green glasses to be higher than global stereoacuity, he concluded that the reduction in stereoacuity was not primarily due to the red‐green glasses.…”

Section: Discussionmentioning

confidence: 99%

Manufacturer changes lead to clinically important differences between two editions of the TNO stereotest

Doorn

Evans

Edgar

et al. 2013

Ophthalmic Physiologic Optic

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract Purpose: Stereoacuity tests used in clinical practice should be repeatable and reproducible. However, it has been observed in a clinical setting that new editions of the TNO stereotest appear to give different values from those obtained using previous versions. The purpose of the present research was to investigate this observation. Methods: One hundred and twenty-one Dutch subjects, 88 (73%) females and 33 (27%) males, with an average age of 34.0 years (range 18-55) had their stereoacuity measured using two different versions of the TNO stereoacuity test (TNO 13 and TNO 15). The TNO was tested in a counterbalanced order so that consecutive subjects started with alternate editions to avoid bias. Results: There was a significant difference (p < 0.001) between the median value for stereoacuity measured with TNO 13 (30 s of arc) and TNO 15 (60 s of arc). The bias between the two test versions was À0.23 Log arcseconds (95% limits of the differences: 0.15 to À0.60 Log arcseconds). Conclusion: This study reveals that results obtained with two different editions of a commonplace stereoacuity test are not comparable. New versions come on the market at regular intervals and the assumption that they will give the same results as previous versions may not be valid. Besides the statistically significant difference between the TNO 13 and TNO 15, the Bland-Altman plot also showed a considerable bias and the 95% limits of the differences between the TNO 13 and TNO 15 are more than two steps on the Log arcsecond scale. This difference between two editions of the TNO stereotests is not clinically acceptable and therefore it is inappropriate to use the two versions of the test interchangeably. It is important in both research and clinical records to specify the edition of the TNO test used. Permanent repository link

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“…Šāda tipa testā svarīgas ir arī fūzijas spējas, kas šajā pētījumā netika ņemtas vērā. Vairāki pētnieki (Yamada et al, 2008;Momeni-Moghadam et al, 2011) šos aspektus analizējuši starp klīniskajiem testiem un nav ieguvuši būtiskas atšķirības stereosliekšņos. To var izskaidrot ar ilgstoši veidotu, komerciālu stereotestu izstrādi vairāku gadu garumā.…”

Section: Diskusijaunclassified

Cilvēka fizioloģijas un uztveres aktuālie pētījumi 2020. gadā : rakstu krājums

2020

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A comparison of stereopsis testing between red/green targets and polarized targets in children with normal binocular vision

Cited by 8 publications

References 4 publications

Overestimation of stereo thresholds by the TNO stereotest is not due to global stereopsis

Overestimation of stereo thresholds by the TNO stereotest is not due to global stereopsis

Manufacturer changes lead to clinically important differences between two editions of the TNO stereotest

Cilvēka fizioloģijas un uztveres aktuālie pētījumi 2020. gadā : rakstu krājums

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