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An algorithm for computing astigmatic refractive errors from ocular parameters

P Erickson

    American Journal of Optometry and Physiological Optics
    |February 1, 1981
    PubMed
    Summary
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    This study presents a straightforward programming algorithm to simplify the tedious calculation of total refractive astigmatism. The new method efficiently handles non-orthogonal principal meridians in optical components.

    Area of Science:

    • Optics
    • Computational Science

    Background:

    • Calculating total refractive astigmatism from individual optical components is complex.
    • Existing methods are tedious, particularly with non-orthogonal principal meridians.

    Purpose of the Study:

    • To present a straightforward programming algorithm for calculating total refractive astigmatism.
    • To simplify calculations involving non-orthogonal meridians in optical systems.

    Main Methods:

    • Development of a novel programming algorithm.
    • Algorithm utilizes trigonometric functions for calculations.
    • Applicable to any programmable device.

    Main Results:

    • The algorithm provides a simplified approach to calculating total refractive astigmatism.

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  • Successfully addresses the complexity of non-orthogonal principal meridians.

    • Conclusions:

    • The presented algorithm offers an efficient and accessible method for refractive astigmatism calculations.
    • Facilitates easier analysis of optical systems with complex component alignments.