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Pigmented lens striae.

G D Sturrock, R C Tripathi

    The British Journal of Ophthalmology
    |April 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Pigmented lens striae are not remnants of tunica vasculosa lentis. Instead, they are fine fibrils of zonular bundles trapping uveal pigment granules, as shown by biomicroscopy and electron microscopy.

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    Area of Science:

    • Ophthalmology
    • Ocular Anatomy
    • Histology

    Background:

    • Pigmented lens striae are observed clinically.
    • Previous theories suggested their origin from tunica vasculosa lentis remnants.

    Purpose of the Study:

    • To investigate the clinical features of pigmented lens striae.
    • To determine the ultrastructural basis of pigmented lens striae.

    Main Methods:

    • Biomicroscopic examination of seven patients with pigmented lens striae.
    • Electron microscopic analysis of three surgically obtained lenses.

    Main Results:

    • Biomicroscopy documented clinical characteristics.
    • Electron microscopy revealed striae composed of fine fibrils and pigment granules.
  • The structure is inconsistent with tunica vasculosa lentis remnants.

    • Conclusions:

    • Pigmented lens striae originate from zonular bundle fibrils.
    • These fibrils entrap pigment granules of uveal origin.
    • This finding refutes the previous theory of tunica vasculosa lentis origin.