Assoc. Prof. Preenun Jitasombuti, DVM, MSc, The President of Thai Society of Veterinary Ophthalmology Practitioners, Thailand

The IOP (intraocular pressure) should not only be measured in the cases of red eyes, but also in the cases of corneal edema, orbital diseases and a history of glaucoma or lens luxation in the opposite eye. Too high or too low pressure can cause by a variety of serious ocular diseases. Increased IOP, glaucoma, is a common eye disease in dogs, cats and horses and usually causes irreversible blindness and painful. Certain breeds of dog are commonly affected by glaucoma, but any dog – mixed or purebred – can be affected. One of the procedures that principally useful in diagnosis of glaucoma is tonometry. Tonometry is the measurement of IOP and there are 3 basic methods of tonometry that can be used to measure IOP in animals: indentation tonometry, applanation tonometry and rebound tonometry.  TONOVET, the basic and reliable equipment, is the rebound tonometry with a magnetized probe that bounces off the cornea when the cornea touched the probe. This device is easy to use and does not require topical anesthesia nor calibration.

In conclusion, the IOP should be measured in all patients presented for ophthalmic examination.