Head Position Affects Intraocular Pressure

Intraocular (inside the eye) pressure readings are used in the diagnosis of equine glaucoma. However, researchers with the University of Pennsylvania have found that the position of the horse's head can impact the pressure reading, which could render readings inaccurate. Their study was published in the July issue of the American Journal of Veterinary Research.

The researchers measured horses' intraocular pressures with their heads positioned above and below heart level. They discovered significant differences in the pressure readings.

The age, sex, and neck length of the horses appeared to have no effect on the pressure readings.

"Failure to maintain a consistent head position between intraocular pressure measurements could potentially prevent the meaningful interpretation of perceived aberrations or changes in the intraocular pressure," noted the researchers.

About the Author

Erin Ryder

Erin Ryder is a former news editor of The Horse: Your Guide To Equine Health Care. She owns a portly gray gelding named Duncan and dabbles in several equestrian disciplines, with an emphasis on dressage.

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