- Open-angle glaucoma usually develops gradually and may cause no noticeable symptoms during its early stages.
- Closed-angle glaucoma occurs when the eye’s drainage angle becomes narrowed or blocked and can sometimes cause a sudden increase in eye pressure.
- Severe eye pain, nausea, and sudden blurry vision associated with acute angle closure require immediate medical attention.
Understanding open-angle vs. closed-angle glaucoma is important because the two conditions can affect the eye very differently. While open-angle glaucoma may progress quietly for years, closed-angle glaucoma can sometimes cause a rapid increase in eye pressure and noticeable symptoms. Patients with narrow-angle glaucoma may also be at risk for sudden angle closure, making proper evaluation and monitoring important for protecting vision.
What Is Open Angle Glaucoma?
Open-angle glaucoma develops when the eye’s drainage angle remains open, but fluid does not drain as effectively as it should. Pressure can gradually increase and damage the optic nerve over time.
One of the challenges of this form of glaucoma is that it can develop without pain or obvious early warning signs. A person may feel that their vision is normal even while damage is occurring. For this reason, routine comprehensive eye examinations and glaucoma testing play an important role in detecting changes before significant vision loss develops.
Treatment focuses on controlling eye pressure and slowing further optic nerve damage. Depending on the patient’s needs, treatment may include pressure-lowering medications or procedures such as Selective Laser Trabeculoplasty.
What Is Closed Angle Glaucoma?
Closed-angle glaucoma involves a different drainage problem. The angle between the iris and cornea becomes narrowed or blocked, preventing fluid from leaving the eye normally.
Some patients have narrow drainage angles without noticeable symptoms. However, if the angle suddenly closes, pressure inside the eye can rise rapidly. This acute form is very different from the typically gradual progression of open-angle glaucoma.
Symptoms That Require Immediate Attention
An acute closed-angle attack is a medical emergency. Symptoms may include:
- Severe eye pain
- Sudden blurry vision
- Nausea
- Rapid or significant changes in vision
Do not ignore these symptoms or assume they will resolve on their own. Rapid increases in eye pressure can threaten the optic nerve and vision, making immediate evaluation necessary.
How Treatment Differs
The appropriate glaucoma treatment depends on the type of drainage problem affecting the eye.
For patients with open-angle glaucoma, care is generally focused on lowering eye pressure and monitoring the optic nerve over time. For patients with narrow angles, preventive treatment may be recommended before an acute attack occurs.
Laser Peripheral Iridotomy, often called LPI, creates a small opening in the iris to help improve fluid movement within the eye. This procedure may be recommended for certain patients with narrow angles to reduce the risk of sudden angle closure.
Protect Your Vision With Regular Glaucoma Care
Because glaucoma can develop without obvious symptoms, professional evaluation remains one of the most important tools for protecting long-term vision. At Advanced Cataract & Glaucoma Care, PLLC, our team uses advanced technology and personalized care to evaluate glaucoma risk and develop treatment plans based on each patient’s needs.
If you have glaucoma, have been told that you have narrow angles, or are concerned about changes in your vision, contact us to schedule an evaluation to discuss possible benefits and risks.
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