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Amblyopia therapy by the Campbell-Hess technique

C C Dalziel

    American Journal of Optometry and Physiological Optics
    |May 1, 1980
    PubMed
    Summary

    A new amblyopia treatment uses precise visual stimulation with contrast gratings. This Campbell-Hess technique improved visual acuity by two lines in 6 of 14 patients with strabismic and anisometropic amblyopia.

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    Area of Science:

    • Ophthalmology
    • Neuroscience
    • Vision Science

    Background:

    • Amblyopia, or 'lazy eye,' is a developmental disorder affecting visual acuity.
    • Current treatments for amblyopia can be time-consuming and have variable success rates.

    Purpose of the Study:

    • To introduce and evaluate a novel technique for amblyopia treatment developed by Campbell and Hess.
    • To assess the efficacy of this new method in improving visual acuity in patients with strabismic and anisometropic amblyopia.

    Main Methods:

    • The Campbell-Hess technique involves stimulating the amblyopic eye with a graded series of contrast frequency gratings.
    • Stimulation is delivered for precise time intervals.
    • Partial occlusion was employed solely during the treatment sessions.

    Main Results:

    • The study treated 14 patients diagnosed with strabismic and anisometropic amblyopia.
    • Six out of the 14 patients (approximately 43%) experienced a notable improvement.
    • The observed improvement averaged two lines on a standard visual acuity chart.

    Conclusions:

    • The Campbell-Hess amblyopia training technique shows promise as a new therapeutic approach.
    • The method demonstrated a measurable improvement in visual acuity for a subset of patients.
    • Further research may be warranted to optimize this technique and expand its applicability.

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