What Is Glaucoma? Early Warning Signs You Shouldn’t Ignore

Glaucoma can be one of the most devastating eye conditions when left unmanaged, often leading to significantly impaired vision or even total blindness. When identified as early as possible and managed appropriately, however, many patients are able to preserve the majority of their vision and slow the progression of glaucoma. While early glaucoma symptoms can be vague or even absent, it’s important to watch out for reduced peripheral vision, blurry vision, and other warning signs of glaucoma at any stage, along with keeping your regularly scheduled eye exams that can evaluate intraocular pressures and diagnose glaucoma without symptoms. 

Here, Seattle, WA eye specialist Dr. Scott Campbell and our knowledgeable team at SPEX share valuable information on the first signs of glaucoma, what to do if you suspect glaucoma, and how glaucoma is ultimately diagnosed and managed to help prevent vision loss over the long term. 

 

What causes glaucoma? 

Glaucoma is a group of eye conditions that can damage the optic nerve, which is responsible for transmitting visual information from the eye to the brain. In many cases, this damage is associated with elevated intraocular pressure, though glaucoma can also occur in people with normal eye pressure. Several factors may increase the risk of developing glaucoma, including:  

• Advancing age 
• Family history of glaucoma 
• Elevated intraocular pressure 
• Diabetes 
• High blood pressure 
• Previous eye injuries 
• Long-term steroid use 
• Certain ethnic backgrounds 

Because glaucoma often develops gradually, many people are unaware they have the condition until vision changes become noticeable. 

 

Can you have glaucoma with no symptoms? 

Yes. In fact, this is one of the reasons glaucoma is often referred to as the "silent thief of sight." The most common form of glaucoma, known as open-angle glaucoma, frequently develops without noticeable symptoms in its early stages. Vision may appear normal while optic nerve damage is already occurring. By the time symptoms become apparent, permanent vision loss may have already taken place. 

 

What are the first signs of glaucoma? 

When symptoms do occur, they often develop gradually and may be easy to overlook at first. Early warning signs of glaucoma can include:  

• Loss of peripheral vision 
• Blurred vision 
• Difficulty adjusting to low-light conditions 
• Patchy areas of missing vision 
• Halos around lights 
• Eye discomfort, in some cases 
• Progressive vision changes 

Certain types of glaucoma, such as acute angle-closure glaucoma, may cause sudden and severe symptoms that require immediate medical attention, including intense eye pain, nausea, headaches, and rapid vision changes. 

 

Does an eye exam show glaucoma? 

Yes. Comprehensive eye exams are one of the most effective tools for detecting glaucoma, often before symptoms develop. During a glaucoma evaluation at SPEX, Dr. Campbell may perform several tests to assess eye health and identify signs of optic nerve damage. These may include:  

• Measurement of intraocular pressure 
• Optic nerve evaluation 
• Visual field testing 
• Corneal thickness measurements 
• Retinal imaging 
• Additional diagnostic testing as needed 

 

Can glaucoma be cured? 

Currently, glaucoma cannot be cured, and vision loss that has already occurred is generally considered permanent. However, glaucoma can often be successfully managed when detected early. Treatment is typically focused on lowering intraocular pressure and slowing or preventing further damage to the optic nerve. Depending on the type and severity of glaucoma, management options may include prescription glaucoma eye drops, laser procedures, minimally invasive glaucoma surgery (MIGS), or traditional glaucoma surgery. With appropriate treatment and ongoing monitoring, many patients are able to maintain useful vision throughout their lives. 

 

Protect your vision for longer with advanced glaucoma screening and eye exams in Seattle, WA 

Because glaucoma often develops without obvious symptoms, regular eye exams remain one of the most important steps you can take to protect your vision. At SPEX, Dr. Scott Campbell and our experienced eye care team provide comprehensive glaucoma screening, advanced diagnostic testing, and personalized treatment plans designed to help preserve long-term eye health. Contact our Seattle, WA office today to schedule an eye exam and learn more about glaucoma detection, monitoring, and management.