What does this research mean for the field?

Monocular blur degrades stereoacuity measurements differently depending on the test used, with random dot tests like TNO and Optonet being more severely impacted than the Frisby test. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To compare the effect of simulated monocular visual acuity impairment on stereoacuity measurements across different clinical stereotests, including the digital Optonet system.

August 22, 2026StrabismusOpen Access

Effect of monocular impaired visual acuity across Optonet TM and non-digital clinical stereotests

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Authors

JMJignasa Mehta AOAnna O’Connor RBRoisin Buckels

Discussion

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Overview

Experimental study demonstrates differing stereoacuity degradation across digital and clinical stereotests during monocular blur in adults, suggesting consistent testing methods are vital.

Key Points

To compare the effect of simulated monocular visual acuity impairment on stereoacuity measurements across different clinical stereotests, including the digital Optonet system.
Enrolled 25 participants (23 females, 2 males; median age 21 years) with baseline visual acuity ≤0.3 logMAR in each eye and <0.2 logMAR interocular difference.
Measured near (40 cm) and distance (4 m) visual acuity using ETDRS charts, then induced monocular blur in the right eye using 0.2 and 0.4 Bangerter foils.
Evaluated stereoacuity at baseline and under blur conditions using Frisby, TNO, and the iPad-based Optonet red/blue stereotest.
Induced blur increased median near visual acuity to 0.36 ± 0.18 logMAR with the 0.2 foil and 0.50 ± 0.19 logMAR with the 0.4 foil in the right eye.
Stereoacuity degraded under 0.2 and 0.4 foils across all modalities: Frisby from 20" to 40" and 85"; Optonet from 40" to 119" and 158"; and TNO from 60" to 240" and 2000".
Significant differences in the magnitude of stereoacuity reduction were observed between Frisby and TNO (p < 0.05, Friedman's two-way analysis of variance).

Cite This Study

Mehta et al. (2026) studied this question.

synapsesocial.com/papers/6a895ec3ca7ade938187ce74 https://doi.org/10.1080/09273972.2026.2617303

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August 22, 2026StrabismusOpen Access

Effect of monocular impaired visual acuity across Optonet TM and non-digital clinical stereotests

View Full Paper

Ask AI

Bookmark

Authors

JMJignasa Mehta AOAnna O’Connor RBRoisin Buckels

Discussion

Member takes

Overview

Experimental study demonstrates differing stereoacuity degradation across digital and clinical stereotests during monocular blur in adults, suggesting consistent testing methods are vital.

Key Points

To compare the effect of simulated monocular visual acuity impairment on stereoacuity measurements across different clinical stereotests, including the digital Optonet system.
Enrolled 25 participants (23 females, 2 males; median age 21 years) with baseline visual acuity ≤0.3 logMAR in each eye and <0.2 logMAR interocular difference.
Measured near (40 cm) and distance (4 m) visual acuity using ETDRS charts, then induced monocular blur in the right eye using 0.2 and 0.4 Bangerter foils.
Evaluated stereoacuity at baseline and under blur conditions using Frisby, TNO, and the iPad-based Optonet red/blue stereotest.
Induced blur increased median near visual acuity to 0.36 ± 0.18 logMAR with the 0.2 foil and 0.50 ± 0.19 logMAR with the 0.4 foil in the right eye.
Stereoacuity degraded under 0.2 and 0.4 foils across all modalities: Frisby from 20" to 40" and 85"; Optonet from 40" to 119" and 158"; and TNO from 60" to 240" and 2000".
Significant differences in the magnitude of stereoacuity reduction were observed between Frisby and TNO (p < 0.05, Friedman's two-way analysis of variance).

Cite This Study

Mehta et al. (2026) studied this question.

synapsesocial.com/papers/6a895ec3ca7ade938187ce74 https://doi.org/10.1080/09273972.2026.2617303

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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