EVALUATION OF APPLANATION TONOMETERS FOR DOG EYE

  • 1 January 1977
    • journal article
    • research article
    • Vol. 16  (10) , 963-968
Abstract
The Mackay-Marg, pneumatonograph, TonAir and EMT-20 tonometers were evaluated in the normal dog eye. Tonometric scale readings were compared to the manometric recordings from the anterior chamber. The Mackay-Marg tonometer evaluated in open and closed systems was the most reliable (goodness of fit [r2] = 0.96) with intraocular pressure up to 100 mm Hg. The pneumatonograph also exhibited high reliability (r2 = 0.92), but tended to underestimate intraocular pressures above 40-50 mm Hg. The TonAir and EMT-20 tonometers were the least satisfactory for the dog, with r2 of 0.77 and 0.66-0.81, respectively. The Mackay-Marg is the most satisfactory tonometer for the dog.

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