HEALTH CALCULATOR
Intraocular Pressure
A precise tool.
What is the Intraocular Pressure & How does it work?
Intraocular pressure (IOP) is the fluid pressure inside the eye and is a critical parameter for diagnosing and managing glaucoma. Normal IOP ranges from 10 to 21 mmHg; values above this range can damage the optic nerve over time. The Goldmann equation describes how IOP is generated by the balance between aqueous humor production (F), its outflow facility (C), and the episcleral venous pressure (P_{v}). By quantifying these physiological variables, clinicians can estimate IOP without invasive tonometry. Understanding the relationship among these variables helps eye‑care professionals tailor treatment—such as medications that reduce production (lower F) or increase outflow (raise C)—to achieve target IOP and preserve vision.
IOP = frac{F}{C} + P_{v}
IOP = intraocular pressure (mmHg) | F = aqueous humor formation rate (µL/min) | C = outflow facility (µL/min/mmHg) | P_{v} = episcleral venous pressure (mmHg)
Parameters
Result
—
Frequently Asked Questions
What is intraocular pressure?
Intraocular pressure is the fluid pressure inside the eye, crucial for diagnosing and managing glaucoma.
How do I use this calculator?
Input the values for aqueous humor production (F), outflow facility (C), and episcleral venous pressure (Pv) to estimate intraocular pressure using the Goldmann equation.
What is the normal range for intraocular pressure?
Normal intraocular pressure ranges from 10 to 21 mmHg. Values above this can damage the optic nerve over time.
Why is intraocular pressure important?
Intraocular pressure is important because it helps diagnose and manage glaucoma, a condition that can lead to vision loss if left untreated.
What does the Goldmann equation describe?
The Goldmann equation describes how intraocular pressure is generated by balancing aqueous humor production, its outflow facility, and episcleral venous pressure.
Results are for informational purposes only and do not constitute professional advice.