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Cilia in the ciliary epithelium

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Cilia in the pigmented and nonpigmented ciliary epithelial cells were studied by electron microscopy in the normal Rhesus monkey eye. In addition cilia formation was studied following paracentesis as well as injection of hemoglobin into the vitreous cavity. In all eyes studied, cilia had a 9+0 microtubule pattern; however, some cilia had aberrant arrangement of microtubules. Cilia increased in number and showed elongation in the treated eyes, these newly-formed cilia occasionally extending towards the cell interior opposite to the normal orientation. The results suggested that the formation of cilia can be provoked by a variety of experimental stimuli either with or without drugs.


Cilien des pigmentierten und des unpigmentierten Ciliar-epithels in normalen Rhesusaffenaugen wurden elektronenmikroskopisch untersucht. Zusätzlich wurde die Bildung von Cilien nach Parazentese und nach Injektion von Haemoglobin in den Glaskörperraum untersucht. In allen untersuchten Augen zeigten die Mikrotubuli in den Cilien ein 9+0 Muster; stellenweise fanden sich aber auch abweichende Mikrotubuli-Muster. In behandelten Augen nahm die Zahl der Cilien sowie ihre Länge zu. Gelegentlich ragten neugebildete Cilien (im Gegensatz zur normalen Ausrichtung) innerhalb extracellulärer Taschen in den Zellkörper hinein. Die Ergebnisse lassen vermuten, daß durch eine Vielzahl (auch medikamentöser) experimenteller Stimuli die Bildung von Cilien provoziert werden kann.

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Correspondence to Y. Ohnishi.

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Ohnishi, Y., Tanaka, M. Cilia in the ciliary epithelium. Albrecht von Graefes Arch. Klin. Ophthalmol. 213, 161–167 (1980). https://doi.org/10.1007/BF00410985

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  • Epithelial Cell
  • Rhesus Monkey
  • Cell Interior
  • Normal Orientation
  • Experimental Stimulus