Table: Intraocular Pressure (IOP) by Applanation Tonometry - Merck Veterinary Manual

Intraocular Pressure (IOP) by Applanation Tonometry

Intraocular Pressure (IOP) by Applanation Tonometry

Species	Tonometer	IOP (mmHg) Mean ± SD^a
Dog	MacKay-Marg	15.7 ± 4.2
	Tono-Pen™	18.7 ± 5.5 12.9 ± 2.7
	Tono-Vet^®	10.8 ± 3.1
Cat	Tono-Pen	19.7 ± 5.6
Rabbit	Pneumatonograph	19.5 ± 1.8 17.9 ± 2.1
Horse	Tono-Pen	29.6 ± 6.2 23.3 ± 6.9
Cow	Tono-Pen	26.9 ± 6.7
Llama/alpaca	Tono-Pen	16.6 ± 3.6
Monkey (ketamine)	Tono-Pen	13.6 ± 3.7
Alligator	Tono-Pen	23.7 ± 2.1
Ferret	Tono-Pen	22.8 ± 5.5
Rat	Tono-Pen	17.3 ± 5.3
Hawk	Tono-Pen	20.6 ± 3.4
Owl	Tono-Pen	10.8 ± 3.6
^a Duplicate figures represent different reports for that species.