Ultrastructural changes of the trabecular meshwork of the monkey (Macaca speciosa) following irradiation with argon laser light

  • Eugen van der Zypen
  • Franz Fankhauser
Article

Abstract

An attempt to elucidate the mechanism of the pressure-lowering effect after treatment of the chamber angle according to Wise and Witter with argon laser light is presented. The ultrastructural effects upon the trabecular meshwork of fourMacaca speciosa monkeys were analyzed at planned intervals by scanning and transmission electron microscopy.

The ultrastructural effects of the treatment are strongly dependent on the site of the laser burns. Whereas burns delivered to the anterior part of the meshwork are tightly sealed by a monocellular layer of atypical corneoendothelial cells, this mechanism is less marked when delivered more posteriorly.

Keywords

Public Health Microscopy Electron Microscopy Transmission Electron Microscopy Argon 

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References

  1. Dannheim R, van der Zypen E (1972) Klinische, Funktionelle und Elektronen-mikroskopische Untersuchungen über die Regenerationsfähigkeit der Kammerwinkelregion des Primatenauges nach Trabekulotomie. Graefe's Arch Clin Exp Ophthalmol 184: 222–247Google Scholar
  2. Greenidge KC, Rodrigues MM, Spaeth GL, Traverso CE, Weinreb S (1984) Acute intraocular pressure elevation after argon laser trabeculoplasty and iridectomy: a clinicopathologic study. Ophthalmic Surg 15: 105–110PubMedGoogle Scholar
  3. Pollack IP, Robin AL, Sax H (1983) The effect of argon laser trabeculoplasty on the medical control of primary open angle glaucoma. Ophthalmology 90: 785–789PubMedGoogle Scholar
  4. Reynolds EW (1963) The use of lead citrate at high PH as an electron-opaque stain in electron microscopy. J Cell Biol 17: 208–212PubMedGoogle Scholar
  5. Rodrigues MM, Spaeth GL, Donohoo P (1982) Electron microscopy of argon laser therapy in phakic open-angle glaucoma. Ophthalmology 89: 198–210PubMedGoogle Scholar
  6. Schwartz AL, Whitten ME, Bleiman B, Martin D (1981) Argon laser trabecular surgery in uncontrolled phakic open angle glaucoma. Ophthalmology 88: 203–212PubMedGoogle Scholar
  7. Spaeth GL (1984) Laser surgery for glaucoma: remarkable advance in patient care. Doc Ophthalmol Proc Series 36: 185–196Google Scholar
  8. Thomas J, Simmons R, Belcher CD (1982) Argon laser trabeculoplasty in the presurgical glaucoma patient. Ophthalmology 89: 187–197PubMedGoogle Scholar
  9. Weber PA, Davidorf FH, McDonald C (1983) Scanning electron microscopy of argon laser trabeculoplasty. Ophthalmic Forum 1: 26–29Google Scholar
  10. Wilensky JT, Jampol LM (1981) Laser therapy for open angle glaucoma. Ophthalmology 88: 213–217PubMedGoogle Scholar
  11. Wise JB, Witter SL (1979) Argon laser therapy for open-angle glaucoma; a pilot study. Arch Ophthalmol 97: 319–322PubMedGoogle Scholar
  12. Zypen E van der, Fankhauser F (1979) The ultrastructural features of laser trabeculopuncture and cyclodialysis. Ophthalmologica 179: 189–200PubMedGoogle Scholar
  13. Zypen E van der, Fankhauser F (1982) Laser in the treament of chronic simple glaucoma. Trans Ophthalmol Soc UK 102: 147–153PubMedGoogle Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Eugen van der Zypen
    • 1
  • Franz Fankhauser
    • 2
  1. 1.Department of Topographical AnatomyUniversity of BernBernSwitzerland
  2. 2.Department of OphthalmologyUniversity of BernBernSwitzerland

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