Comparison of MacKay-Marg, Goldmann, and Perkins tonometers in abnormal corneas

Arch Ophthalmol. 1975 Jun;93(6):420-4. doi: 10.1001/archopht.1975.01010020434007.


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 monometric 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.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cicatrix
  • Cornea*
  • Edema / chemically induced
  • Eye Diseases / chemically induced
  • Eye Diseases / physiopathology
  • Haplorhini
  • Intraocular Pressure
  • Manometry
  • Sodium Hydroxide
  • Tonometry, Ocular / instrumentation*
  • Tonometry, Ocular / standards


  • Sodium Hydroxide