What is the normal intraocular pressure range?

What is the normal intraocular pressure range?

• A. 0 to 5 mmHg
• B. 30 to 40 mmHg
• C. 50 to 60 mmHg
• D. Approximately 10 to 21 mmHg

Answer: (D)

Normal intraocular pressure is the pressure inside the eye that results from the balance between aqueous humor production and its drainage. In healthy eyes, this pressure is typically around 10 to 21 mmHg. Values outside this range suggest problems: too low, such as 0–5 mmHg, is hypotony and can lead to vision issues; too high, such as 30–40 or 50–60 mmHg, indicates ocular hypertension and risks optic nerve damage seen in glaucoma. There is natural variation during the day and between people, but the standard reference range used is approximately 10 to 21 mmHg.

Normal intraocular pressure is the pressure inside the eye that results from the balance between aqueous humor production and its drainage. In healthy eyes, this pressure is typically around 10 to 21 mmHg. Values outside this range suggest problems: too low, such as 0–5 mmHg, is hypotony and can lead to vision issues; too high, such as 30–40 or 50–60 mmHg, indicates ocular hypertension and risks optic nerve damage seen in glaucoma. There is natural variation during the day and between people, but the standard reference range used is approximately 10 to 21 mmHg.