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[Combined contactoptical system (author's transl)]

M Dutescu, E M Hanrath, G Boeck

    Klinische Monatsblatter Fur Augenheilkunde
    |April 1, 1976
    PubMed
    Summary
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    The piggy-back contact lens system, combining soft and hard lenses, effectively treats various eye conditions including astigmatism and keratoconus. This optical system demonstrates positive therapeutic and visual outcomes for diverse patient groups.

    Area of Science:

    • Ophthalmology
    • Optometry
    • Biomedical Engineering

    Context:

    • The piggy-back system involves layering a rigid gas permeable lens over a soft contact lens.
    • This technique addresses complex refractive errors and ocular surface diseases.

    Purpose:

    • To detail the indications and adaptation methods for the piggy-back contact lens system.
    • To evaluate the optical and therapeutic efficacy of this combined lens approach.

    Summary:

    • The study analyzed 7 patient groups (56 eyes) with conditions such as astigmatism, aphakia, keratoconus, post-keratoplasty, ocular injuries, chronic epithelial defects, and dry eye.
    • Results indicate successful adaptation and positive visual and therapeutic outcomes using the piggy-back system for these diverse ophthalmic cases.

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    Impact:

    • Provides a viable contact lens solution for patients with challenging visual and ocular surface conditions.
    • Highlights the versatility and effectiveness of combined soft and hard contact lens systems in improving patient vision and ocular health.