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Related Experiment Videos

A new lens for closed pars plana vitrectomy.

F I Tolentino, H M Freeman

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |November 1, 1979
    PubMed
    Summary

    A novel prismatic lens offers enhanced peripheral visualization of the vitreous cavity. This innovative lens design also facilitates corneal irrigation, proving beneficial for both surgical and diagnostic ophthalmic procedures.

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    Area of Science:

    • Ophthalmology
    • Surgical Instrumentation
    • Medical Optics

    Background:

    • Standard ophthalmic lenses may limit peripheral visualization during vitreous cavity examination.
    • Enhanced visualization is crucial for accurate diagnosis and effective surgical intervention in ophthalmology.

    Purpose of the Study:

    • To introduce a new prismatic lens designed for improved peripheral viewing of the vitreous cavity.
    • To evaluate the utility of this lens in both vitrectomy procedures and diagnostic biomicroscopy.

    Main Methods:

    • Development of a prismatic lens with a concave corneal-contact surface and an inclined plano surface.
    • Incorporation of a cannula for continuous corneal irrigation.
    • The lens provides a prismatic effect of 15 or 25 degrees.

    Main Results:

    • The prismatic lens design successfully enables a more peripheral view of the vitreous cavity.
    • The integrated cannula effectively provides corneal irrigation.
    • The lens is suitable for both surgical (vitrectomy) and diagnostic (biomicroscopy) applications.

    Conclusions:

    • This new prismatic lens significantly enhances visualization of the peripheral vitreous and fundus.
    • Its dual functionality makes it a valuable tool for ophthalmic surgeons and clinicians in office-based diagnostics.

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