The measurement of IOP is an important part of the complete ophthalmic examination and is particularly applicable in the diagnosis and management of uveitis and glaucoma. An easy to use and reliable tonometer is thus an essential piece of equipment for both the general practitioner and ophthalmologist alike. The TONOVET has become extremely popular among veterinary ophthalmologists because it is portable, easy to use, very well tolerated and does not require prior topical anaesthesia or calibration by the operator.