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Myoepithelium of the Human Iris: A Stereoscopic Scanning Electron Microscopic Study
Author(s) -
Lowe Ronald P.,
Carroll Nanette
Publication year - 1975
Publication title -
australian journal of opthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 0310-1177
DOI - 10.1111/j.1442-9071.1975.tb00832.x
Subject(s) - myoepithelial cell , dilator , anatomy , iris (biosensor) , pathology , medicine , biomedical engineering , immunohistochemistry , computer security , computer science , biometrics
S ummary T he dilator pupillæ of postmortem human eyes was examined by light microscopy and scanning electron microscopy. The results are reviewed in association with reports in the literature. The dilator pupilæ forms a dense layer with both muscular and epithelial functions (myoepithelium). During muscular activity the myoepithelial cells undergo marked intracellular rearrangement from long and fusiform in miosis, to columnar in wide mydriasis. During contraction of the dilator the myoepithelial cells change in a manner vastly different from mesodermal, visceral, smooth muscle cells.