Comparison of MacKay-Marg, Goldmann, and Perkins Tonometers in Abnormal Corneas

Fred McMillan, Richard K. Forster

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


Intraocular pressure was determined manometrically in owl monkey eyes with normal and edematous corneas. The pressure was measured with Perkins hand held, Goldmann, and MacKay Marg tonometers to compare relative accuracy. At manometric levels of 20, 30, and 40 mm Hg, a statistically significant difference in readings was found between normal and edematous corneas with use of the Perkins and Goldmann applanators, whereas no such difference was found with the MacKay Marg tonometer. The MacKay Marg tonometer most closely approximated the true intraocular pressure in edematous corneas.

Original languageEnglish (US)
Pages (from-to)420-424
Number of pages5
JournalArchives of ophthalmology
Issue number6
StatePublished - Jun 1975


  • Goldmann
  • MacKay-Marg
  • Perkins hand-held
  • abnormal corneas
  • applanator
  • edematous
  • intraocular pressure
  • manometric
  • owl monkey
  • pachometer
  • tonometer

ASJC Scopus subject areas

  • Ophthalmology


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