Understanding Glaucoma and Its Silent Progression
Glaucoma is one of the world’s leading causes of irreversible blindness, affecting more than 80 million people globally—a number expected to reach 111 million by 2040, according to the British Journal of Ophthalmology. Because glaucoma often develops without pain or noticeable symptoms, many individuals remain unaware until vision loss has already begun.
Glaucoma damages the optic nerve, typically due to elevated intraocular pressure (IOP). While there are several types, the most common—Primary Open-Angle Glaucoma (POAG)—progresses slowly and quietly. Other forms, such as Angle-Closure Glaucoma, can develop suddenly and cause dramatic symptoms, including intense pain and vision changes.
Understanding whether a headache may be related to glaucoma requires knowing which signs to look for and when they matter.
Can a Headache Signal Glaucoma?
The question does glaucoma cause headaches is common, especially among individuals experiencing persistent discomfort around the eyes or temples. The answer depends on the type of glaucoma.
When Headaches Are Not a Typical Sign
For POAG—the most prevalent form—headaches are generally not a hallmark symptom. Because POAG progresses slowly and painlessly, individuals rarely associate it with discomfort.
When Headaches Can Be a Warning Sign
Angle-Closure Glaucoma, however, is a different story. When the eye’s drainage angle becomes blocked, internal pressure may rise rapidly. This sudden spike can lead to:
Severe headaches
Eye pain
Blurred or hazy vision
Halos around lights
Nausea or vomiting
Eye redness
A study in The New England Journal of Medicine notes that acute angle-closure episodes require immediate medical attention to prevent permanent vision loss. These symptoms should never be ignored.
Headache Symptoms That May Point to an Eye-Related Cause
While most headaches are due to stress, dehydration, or digital eye strain, certain patterns may suggest the need for an eye exam:
Headaches paired with vision changes such as halos, glare, or blurriness
Sharp pain behind the eye or around the brow
Sudden worsening of vision
Persistent headaches that do not improve with typical remedies
These symptoms do not confirm glaucoma, but they indicate that something in the visual system requires evaluation.
When a Headache Is More Likely Something Else
Many conditions can mimic eye-related pain, including:
Tension headaches: A “band-like” pressure around the head
Migraines: Often accompanied by light sensitivity, visual aura, or nausea
Digital eye strain: Increasingly common in individuals who spend long hours on screens
Sinus pressure: Can radiate around the eyes and forehead
Only an eye examination can distinguish between these causes and vision-threatening conditions like glaucoma.
How Optometrists Detect Glaucoma
Visiting an optometrist in Vancouver ensures a comprehensive approach to eye health. Clinics such as Gastown Optometry use advanced diagnostic technology to identify glaucoma earlier than ever before.
A thorough glaucoma assessment may include:
Tonometry
Measures the pressure inside the eye.
Optic Nerve Evaluation
The doctor examines the optic nerve for signs of thinning or damage.
Optical Coherence Tomography (OCT)
Provides high-resolution imaging of the optic nerve and retinal layers.
Visual Field Testing
Detects blind spots or peripheral vision loss—changes often unnoticed by patients.
Gonioscopy
Evaluates the drainage angle to determine glaucoma type.
Because early stages rarely cause symptoms, routine exams remain the most reliable way to catch glaucoma before vision loss occurs.
Who Is Most at Risk for Glaucoma?
While anyone can develop glaucoma, certain individuals face higher risk. According to the Glaucoma Research Foundation, risk rises with:
Age (especially over 60)
Family history of glaucoma
High eye pressure
Thin corneas
Diabetes
Severe myopia
Long-term steroid use
People of African, Asian, or Hispanic descent also experience higher rates of certain glaucoma types.
For these groups, the presence of headaches—especially with visual disturbances—may warrant faster action.
Is Your Headache a Sign of Glaucoma? Know When to Act
Most headaches do not signal glaucoma, but the possibility becomes more significant when paired with vision changes or eye discomfort. Because glaucoma-related vision loss cannot be reversed, early detection is vital.
Gastown Optometry encourages individuals with recurring headaches, sudden vision changes, or a family history of glaucoma to schedule a comprehensive eye exam. Their team provides medical management, modern diagnostic tools, and ongoing care for chronic eye conditions.
Protecting your long-term vision starts with one appointment. Book your exam today at Gastown Optometry and ensure your eyesight is in trusted hands.
