Normal Intraocular Pressure (IOP) Values in Animals - Applanation Method

Species

IOP (mm Hg) Mean ± SDa

Dog

18.7 ± 5.5a

Cat

19.7 ± 5.6

Rabbit

19.5 ± 1.8b

Horse

29.6 ± 6.2

Cow

26.9 ± 6.7

Llama/alpaca

16.6 ± 3.6

Monkey (ketamine)

13.6 ± 3.7

Alligator

23.7 ± 2.1

Ferret

22.8 ± 5.5

Rat

17.3 ± 5.3

Hawk

20.6 ± 3.4

Owl

10.8 ± 3.6

a10.8 ± 3.1 reported as measured in dogs with Rebound method.

bRabbit values measured with pneumatography.

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