Accommodation of an Endocapsular Silicone Lens (Phaco-Ersatz ) in the Nonhuman Primate

Eduard Haefliger, Jean Marie Parel, Francisco Fantes, Edward W.D. Norton, Douglas R. Anderson, Richard K. Forster, Eleut Hernandez, William J. Feuer

Research output: Contribution to journalArticle

91 Scopus citations


In owl monkeys, as a model of endocapsular cataract extraction, the lens material was removed through a small hole in the capsule and was replaced with a silicone polymeric gel. The ability of this endocapsular implant (Phaco-Ersatz) to accommodate was documented when pilocarpine produced an increase in the curvature of the lens surface and a decrease in the anterior chamber depth, just as occurs with the untouched natural lens. Refinements of the surgical technique are required to achieve a controlled degree of filling of the capsular bag and inhibit postoperative epithelial proliferation on the inner capsular surface.

Original languageEnglish (US)
Pages (from-to)471-477
Number of pages7
Issue number5
StatePublished - Jan 1 1987


  • Scheimpflug photography
  • accommodation
  • artificial implant
  • cataract surgery
  • cholinergic stimulation
  • endocapsular phacoemulsification
  • nonhuman primate
  • pachymetry
  • silicone polymer lens

ASJC Scopus subject areas

  • Ophthalmology

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    Haefliger, E., Parel, J. M., Fantes, F., Norton, E. W. D., Anderson, D. R., Forster, R. K., Hernandez, E., & Feuer, W. J. (1987). Accommodation of an Endocapsular Silicone Lens (Phaco-Ersatz ) in the Nonhuman Primate. Ophthalmology, 94(5), 471-477.