Can eye pressure be monitored at home?

Certain handheld devices allow selected patients to measure intraocular pressure at home. Home measurements may reveal pressure changes that are not captured during a daytime office appointment. However, these devices require training, and the results must be interpreted by an eye doctor because readings can vary based on technique and corneal characteristics.

Can nighttime blood pressure affect the optic nerve?

Blood pressure normally decreases during sleep. In some people, an excessive nighttime drop may reduce the blood supply reaching the optic nerve, particularly when eye pressure is also elevated. Patients with glaucoma should not change the timing or dosage of blood pressure medication on their own. An ophthalmologist and primary care physician can determine whether coordinated blood pressure monitoring is appropriate.

What should I do if my CPAP mask causes dry or irritated eyes?

Air leaking from a continuous positive airway pressure (CPAP) mask may reach the eyes and contribute to dryness, irritation, or tearing. Patients should speak with their sleep specialist about mask fit, air leakage, or humidifier settings rather than stopping CPAP treatment. Persistent eye discomfort should also be evaluated by an eye care professional.

Is it safe to wear a sleep mask if I have glaucoma?

A loose sleep mask that blocks light without pressing on the eyes may be comfortable for some patients. Avoid masks, goggles, or straps that place noticeable pressure on the eyelids or eye sockets.

Which nighttime eye symptoms require urgent medical attention?

Glaucoma usually does not cause sudden nighttime symptoms. However, intense eye pain, a red eye, blurred vision, halos around lights, headache, nausea, or vomiting may indicate acute angle-closure glaucoma. This is an eye emergency that requires immediate medical attention.

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Glaucoma and Sleep Position: Is the Way You Sleep Raising Eye Pressure?

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Glaucoma and Sleep Position: Is the Way You Sleep Raising Eye Pressure?

Posted on August 22, 2026 (September 3, 2026) by Lake Eye Associates

Elderly woman sleeping beside a large eye anatomy diagram with arrows indicating eye pressure and glaucoma headline nearby.

Reviewed By: Dr. Jose Alfredo Vazquez, MD, Board-Certified Comprehensive Ophthalmologist.
Summary
You use your prescribed eye drops, keep your follow-up appointments, and do your best to protect your vision. But what happens to your eye pressure during the six, seven, or eight hours you spend in bed?