Ocular hypertension risk (OHTS)

About this calculator

The Ocular Hypertension Treatment Study (OHTS) calculator estimates the chance that a person with ocular hypertension, meaning higher eye pressure without glaucoma damage, develops primary open-angle glaucoma within five years.

What you need

• Age
• Eye pressure, central corneal thickness, vertical cup-to-disc ratio and visual field pattern standard deviation (PSD), each averaged from clinic measurements

What the result can and cannot tell you

The official page sets out its testing methods and eligible ranges, including age 30 to 80 years, untreated eye pressure 20 to 32 mmHg and corneal thickness 475 to 650 µm. It applies to people with ocular hypertension who do not have glaucoma, and it does not estimate how established glaucoma will progress. Washington University limits redistribution of its files, so we link to the official version.

Open the official OHTS calculator

References

1. Washington University: Ocular Hypertension Treatment Study risk calculator

Related

• Eye pressure reduction
• Ocular perfusion pressure
• Eye pressure fluctuation
• Glaucoma guide
• All eye calculators

For information only. These tools explain numbers and do not replace an eye examination or your eye doctor’s advice. Values you enter stay in your browser.