An interactive framework for the evaluation and detection of stereoacuity threshold under ambient lighting

An interactive framework for the evaluation and detection of stereoacuity threshold under ambient lighting

Objective: Our study aims to provide a novel framework for the continuous evaluation of stereoacuity under ambient lighting conditions using Bayesian inference. Methods: We applied a combination of psychophysical and expected entropy minimization procedures for the computation of a continuous stereo...

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Veröffentlicht in:arXiv.org 2024-06
Hauptverfasser: Lohia, Kritika, Rijul, Saurabh Soans, Saxena, Rohit, Gandhi, Tapan Kumar
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Bayesian analysis
Lighting
Statistical inference
Trans-Neptunian objects
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description Objective: Our study aims to provide a novel framework for the continuous evaluation of stereoacuity under ambient lighting conditions using Bayesian inference. Methods: We applied a combination of psychophysical and expected entropy minimization procedures for the computation of a continuous stereoacuity threshold. Subsequently, we evaluated the effect of ambient lighting during stereoacuity testing (ST) by adopting a bisection-matching based adaptive gamma calibration (AGC). Participants (\(N=187\)) including visually healthy controls (\(N=51\)), patients with Intermittent Divergent Squint (IDS; \(N=45\)), and controls with induced anisometropia (IA; \(N=91\)) performed ST with and without AGC under two lighting conditions: completely dark (20 cd/m\(^2\)) and normally lit (130 cd/m\(^2\)) rooms. Results: Our framework demonstrated "excellent" reliability (\(> 0.9\)) and a positive correlation with TNO (a clinical stereo test), regardless of whether AGC was conducted. However, when AGC is not performed, significant differences (Friedman \(X_{r}^{2} = 28.015\); \(p
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However, when AGC is not performed, significant differences (Friedman \(X_{r}^{2} = 28.015\); \(p&lt;0.00001\); Bland-Altman bias: 30 arc-sec) were found in stereoacuity thresholds between dark and light conditions for participants with IDS and IA. Controls are unaffected by AGC and yield a similar stereoacuity threshold under both lighting conditions. Conclusion: Our study proves that stereoacuity threshold is significantly deviated particularly in participants with IDS or IA stereo-deficits if ambient lighting is not taken into consideration. Moreover, our framework provides a quick (approximately 5-10 minutes) assessment of stereoacuity threshold and can be performed within 30 ST and 15 AGC trials. 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Statistical inference
Trans-Neptunian objects
title An interactive framework for the evaluation and detection of stereoacuity threshold under ambient lighting
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