Glaucoma Explained: Symptoms, Causes, and How to Protect Your Vision
A comprehensive guide to glaucoma, including risk factors, early warning signs, and how routine eye tests can help prevent permanent vision loss.
What is Glaucoma?
Glaucoma is a group of eye conditions that damage the optic nerve, the vital structure responsible for transmitting visual information from the eye to the brain.
This damage is most commonly caused by increased pressure inside the eye, known as intraocular pressure (IOP). Over time, elevated pressure can gradually harm the optic nerve, leading to progressive vision loss.
According to global eye health authorities, glaucoma is one of the leading causes of permanent blindness worldwide. The danger is that vision loss often occurs slowly and painlessly, which is why regular eye examinations are essential for early diagnosis.
Types of Glaucoma
Open-Angle Glaucoma – The most common form of glaucoma, where the drainage system of the eye becomes less efficient over time, causing pressure to build gradually.
Angle-Closure Glaucoma – A more sudden and serious type that occurs when the drainage angle between the iris and cornea becomes blocked.
Normal-Tension Glaucoma – Optic nerve damage occurs even when eye pressure is within normal levels.
Secondary Glaucoma – Develops due to other conditions such as eye injury, inflammation, diabetes, or long-term steroid use.
Common Symptoms of Glaucoma
Glaucoma often has no symptoms in its early stages. As it progresses, signs may include:
• Gradual loss of peripheral vision
• Tunnel vision in advanced stages
• Blurred vision
• Halos around lights
• Eye redness
• Eye pain (in acute cases)
Because symptoms may appear only after damage occurs, routine eye examinations remain the most reliable way to detect glaucoma early.
Who is at Risk of Developing Glaucoma?
Certain factors increase the likelihood of developing glaucoma:
• Age over 40
• Family history of glaucoma
• High eye pressure
• Diabetes or high blood pressure
• Long-term steroid medication use
• Previous eye injuries
Individuals with these risk factors should prioritize regular eye examinations.
How is Glaucoma Diagnosed?
Glaucoma can be detected through a comprehensive eye examination. Tests may include:
• Tonometry – measures pressure inside the eye
• Optic nerve examination
• Visual field testing
• Optical Coherence Tomography (OCT) imaging
These tests help detect glaucoma before noticeable vision loss occurs.
Treatment Options for Glaucoma
Although glaucoma cannot be cured, treatment can slow or stop its progression if detected early.
Common treatments include:
• Prescription eye drops
• Oral medications
• Laser treatment to improve drainage
• Surgical procedures in advanced cases
The appropriate treatment depends on the type and severity of glaucoma.
How to Protect Your Vision
Protecting your eyesight begins with awareness and early detection. Steps you can take include:
• Scheduling regular comprehensive eye examinations
• Informing your optometrist about family history
• Managing conditions like diabetes and hypertension
• Protecting your eyes from injury
• Following prescribed treatments if diagnosed with glaucoma
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Meta Title: Glaucoma Explained: Symptoms, Causes and Prevention | Wickramarachchi Opticians
Meta Description: Learn about glaucoma symptoms, causes, risk factors and treatment options. Discover how regular eye tests at Wickramarachchi Opticians can help protect your vision.
Primary Keywords: glaucoma symptoms, glaucoma causes, glaucoma treatment, glaucoma eye test, protect your vision, glaucoma Sri Lanka
FAQ Section (SEO Optimized)
What is the first sign of glaucoma?
In many cases, there are no early symptoms. The first noticeable sign is usually a gradual loss of peripheral vision.
Can glaucoma cause blindness?
Yes. If left untreated, glaucoma can cause permanent vision loss and blindness.
Who should get tested for glaucoma?
Adults over 40, people with a family history of glaucoma, and individuals with diabetes or high eye pressure should have regular eye examinations.
How often should I have an eye test for glaucoma?
Most adults should have an eye examination every one to two years, or more frequently if recommended by an eye care professional.
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