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Related Experiment Videos

Stereoacuity in patients with optic nerve disease.

J R Friedman, G S Kosmorsky, R M Burde

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |January 1, 1985
    PubMed
    Summary

    Patients with optic nerve disease often fail the Titmus stereoacuity test (TST). This test is disproportionately affected by optic nerve conditions, indicating its sensitivity to visual pathway damage.

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    Area of Science:

    • Ophthalmology
    • Neuroscience
    • Vision Science

    Background:

    • Stereoacuity is crucial for depth perception.
    • Optic nerve disease can impact visual function.
    • The Titmus stereoacuity test (TST) is a common clinical tool.

    Purpose of the Study:

    • To evaluate the performance of patients with optic nerve disease on the Titmus stereoacuity test (TST).
    • To compare TST scores in patients with and without known optic nerve disease.
    • To determine if visual acuity reduction from optic nerve disease disproportionately affects TST scores.

    Main Methods:

    • Twenty-eight patients were assessed using the Titmus stereoacuity test (TST).
    • Patients were categorized into two groups: 17 with documented optic nerve disease and 11 without known optic nerve disease.
    • TST scores were compared against expected performance based on visual acuity.

    Main Results:

    • 76% of patients with optic nerve disease failed to achieve expected TST scores.
    • Only 27% of patients without optic nerve disease failed to achieve expected TST scores.
    • Optic nerve disease caused a greater-than-expected reduction in TST scores relative to Snellen visual acuities.

    Conclusions:

    • The Titmus stereoacuity test (TST) is highly sensitive to deficits caused by optic nerve disease.
    • Reduced stereoacuity on the TST in patients with optic nerve disease is disproportionate to visual acuity loss.
    • TST performance may serve as an indicator of optic nerve dysfunction.

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