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. Author manuscript; available in PMC: 2019 Sep 16.
Published in final edited form as: Vet Ophthalmol. 2004 Jul-Aug;7(4):261–264. doi: 10.1111/j.1463-5224.2004.04038.x

Table 1.

Tono-Pen calibration curves reported for various animal species and measured here for cat, cow, and sheep (last three entries).

Animal Tono-Pen
Model		 Intercept
(mmHg)		 Slope
human 1 0 0.9412
1 0 1.0613
dog 1 2 0.707
1 1 0.7310
horse 1 2 0.726
1 −2 0.7210
rat 2 5 0.791
XL 7 0.509
rabbit 1 −1 0.792
2 −1 0.822
XL 1 0.653
monkey 1 1 0.694
cat 1 −1 0.735
XL 0 0.62
cow XL 5 0.72
sheep XL 4 0.69