What is the normal range for intraocular pressure (IOP) in adults?

The normal range for intraocular pressure (IOP) in adults is 10-21 mmHg. This range is established based on extensive clinical research and studies that have determined the pressures associated with healthy eyes. IOP is a critical parameter in the assessment of eye health, as it helps in diagnosing and managing conditions such as glaucoma.

Maintaining IOP within the normal range is essential, as elevated pressures can lead to optic nerve damage and subsequent loss of vision. The upper limit of 21 mmHg is particularly significant; pressures above this threshold may indicate an increased risk for glaucoma, although individual variations and other risk factors must also be considered in clinical assessments.

Values below 10 mmHg can occur in individuals with specific ocular conditions but are generally considered less common. Intraocular pressures consistently above 21 mmHg prompt further investigation, whereas pressures between 10 and 21 mmHg are regarded as stable and typically indicative of healthy ocular physiology.