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[Results with automatic refraction (author's transl)].

H Holtmann, P Kroll

    Klinische Monatsblatter Fur Augenheilkunde
    |April 1, 1975
    PubMed
    Summary
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    Automatic refraction using the "Dioptron" shows high correlation with subjective refraction for young patients. While it complements subjective eye exams, it cannot replace fine adjustments for accurate vision correction.

    Area of Science:

    • Ophthalmology
    • Optometry
    • Vision Science

    Background:

    • Accurate refractive error assessment is crucial for visual acuity.
    • Subjective refraction is the gold standard but can be time-consuming.
    • Automated refractors offer a potentially faster screening method.

    Purpose of the Study:

    • To compare the accuracy of subjective refraction with automatic refraction using the "Dioptron".
    • To evaluate the Dioptron's effectiveness as a screening tool for refractive errors.

    Main Methods:

    • One hundred young patients (average age 25) underwent both subjective and Dioptron automatic refraction.
    • Refraction and visual acuity were measured before and after cycloplegia.
    • Spherical equivalents and cylindrical powers were compared between methods.

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    Main Results:

    • Excellent correlation (r=0.98) was found between subjective and Dioptron spherical equivalents.
    • The Dioptron tended to report higher cylindrical powers than subjective refraction.
    • Greater cylinder power correlated with smaller axial deviations between the two methods.

    Conclusions:

    • The "Dioptron" automatic refractor is a reliable screening tool for refractive errors.
    • It demonstrates strong agreement with subjective refraction for spherical components.
    • While not a replacement for subjective refinement, it serves as a valuable starting point for optometric procedures.