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. 2022 Jun 29;15(2):163-167.
doi: 10.4103/ojo.ojo_460_20. eCollection 2022 May-Aug.

Diagnostic accuracy of indigenously developed computer-based binocular vision assessment

P Praveen Kumar  1 , T Shajahan  1 , Jameel Rizwana Hussaindeen  1   2
Affiliations

Diagnostic accuracy of indigenously developed computer-based binocular vision assessment

P Praveen Kumar et al. Oman J Ophthalmol. .

Abstract

Context: The increased prevalence of nonstrabismic binocular vision anomalies (NSBVA) has given rise to the need for cost-effective screening and diagnostic tools.

Aims: The aim of the study is to assess the efficacy of an indigenously developed computer-based binocular vision assessment software (Train Your Eyes®) in screening NSBVA.

Subjects and methods: Subjects who visited the binocular vision clinic of a tertiary eye care center with asthenopic symptoms between January 2019 and January 2020 were included in the study. Patients with other ocular comorbidities and stereopsis poorer than 500 arc seconds were excluded. All subjects underwent a comprehensive eye examination followed by binocular vision assessment using both the manual and computer-based methods.

Statistical analysis used: Receiver operating characteristic (ROC) curves were utilized to choose the cut-off points that maximize the sensitivity and specificity.

Results: The mean (standard deviation) age of 88 subjects was 22 (4.5) years with 34 males. Based on the conventional manual assessment, 71 (81%) were diagnosed to have NSBVA and 17 (19%) had normal binocular vision. Based on the ROC analysis, the following cut-off points are proposed: 14 prism diopter (PD) for near positive fusional vergence amplitudes, 4.5 PD for near negative fusional vergence amplitudes, 4.5 cycles per minute (cpm) for binocular accommodative facility, and 3.5 cpm for monocular accommodative facility. All the binocular vision parameters demonstrated statistical significance in the ROC analysis (P < 0.05).

Conclusions: The software-based screening tool was found to be highly sensitive in identifying NSBVA and thus could be used as a potential screening tool in the clinic and community.

Keywords: Nonstrabismic binocular vision anomalies; random-dot stereogram; train your eyes.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Percentage of nonstrabismic binocular vision anomalies. CI: Convergence insufficiency, AIF: Accommodative facility, CE: Convergence excess, FVD: Fusional vergence dysfunction, IDS: Intermittent divergent squint
Figure 2
Figure 2
Receiver operating characteristic curve for (a) negative fusional vergence amplitude and (b) positive fusional vergence amplitude
Figure 3
Figure 3
Receiver operating characteristic curve for (a) right eye accommodative facility; (b) left eye accommodative facility and (c) both eye accommodative facility
See this image and copyright information in PMC

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