Alterations in Muscle and Retinal Cell Structure after Exposure to Light

  • Charles R. Shear


Exposure of albino rats to both incandescent and fluorescent low-level radiant energy causes damage and degeneration to the photoreceptor cells and pigment epithelial cells of the retina and to the muscle fibers of the extraocular muscles (1–4). The type of cellular damage is the same for both incandescent and for fluorescent light exposed animals (5). Our previous studies indicate that elevated environmental and orbital temperatures are not responsible for the damage seen in the retina or in the myofibers of the extraocular muscles. In order to better understand the relation between light exposure and damage in such diverse cell types, the sequences of ultrastructural changes has been examined.


Sarcoplasmic Reticulum Outer Segment Photoreceptor Cell Thin Filament Extraocular Muscle 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Charles R. Shear
    • 1
  1. 1.Department of AnatomyUniversity of Maryland School of MedicineBaltimoreUSA

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