Glaucoma is often referred to as “the silent vision thief” because it typically develops without noticeable symptoms in the early stages. Left untreated, glaucoma can lead to permanent vision loss and even blindness. The key to protecting your vision is understanding this condition and taking a proactive approach to your eye health. In this post, we’ll explain what glaucoma is, how it affects your vision, and how you can protect yourself with early detection and expert care.
What is Glaucoma?
Glaucoma is a group of eye diseases that damage the optic nerve, which is essential for transmitting visual information to the brain. This damage is often caused by increased pressure in the eye, known as intraocular pressure (IOP). However, glaucoma can also occur even when eye pressure is normal, making regular eye exams crucial for early detection.
Types of Glaucoma
a) Open-Angle Glaucoma (Most Common Type)
What It Is: The drainage system in the eye becomes less efficient over time, causing fluid to build up and increase eye pressure.
Symptoms: Often asymptomatic until significant vision loss occurs, starting with peripheral vision.
b) Angle-Closure Glaucoma
What It Is: The iris is too close to the drainage angle, potentially blocking fluid from draining properly.
Symptoms: Eye pain, blurred vision, headache, nausea, and seeing halos around lights. This is a medical emergency.
c) Normal-Tension Glaucoma
What It Is: The optic nerve is damaged despite normal eye pressure levels. The exact cause is unknown but may be related to poor blood flow.
Symptoms: Similar to open-angle glaucoma but often diagnosed after vision loss has begun.
d) Congenital Glaucoma
What It Is: A rare form of glaucoma present at birth due to abnormal eye development.
Symptoms: Sensitivity to light, excessive tearing, and cloudy eyes in infants.
Why Early Detection is Critical
Glaucoma-related vision loss is irreversible, but early detection can prevent further damage. Since glaucoma often progresses silently, routine eye exams are essential—especially for individuals at higher risk, such as:
- People over 40
- Individuals with a family history of glaucoma
- People with diabetes or high blood pressure
- Those with previous eye injuries
How Glaucoma is Diagnosed
At Invision Eye Clinic, we use the latest technology to detect glaucoma, even in its earliest stages. During a comprehensive eye exam, you may undergo:
Tonometry: Measures intraocular pressure.
Ophthalmoscopy: Examines the optic nerve for damage.
Perimetry (Visual Field Test): Maps out your peripheral vision to detect blind spots.
OCT (Optical Coherence Tomography): Provides detailed imaging of the optic nerve and retina.
Treatment Options for Glaucoma
While there is no cure for glaucoma, treatments can effectively slow or halt its progression and protect your remaining vision.
a) Prescription Eye Drops
Eye drops are often the first line of treatment, helping to lower eye pressure by reducing fluid production or improving drainage.

b) Oral Medications
In some cases, oral medications may be prescribed in combination with eye drops to control intraocular pressure.
c) Laser Therapy
Procedures like Selective Laser Trabeculoplasty (SLT) help improve fluid drainage, reducing eye pressure.
d) Surgery
In more severe cases, surgical procedures such as trabeculectomy or implant surgery may be necessary to create new drainage pathways for fluid.
Preventing Vision Loss: Tips for Maintaining Eye Health
Stick to Your Treatment Plan: Follow your prescribed treatment regimen closely to control eye pressure.
Maintain Regular Eye Exams: Schedule routine comprehensive eye exams to monitor any changes in your eye health.
Protect Your Eyes: Avoid eye injuries by wearing protective eyewear during sports or activities that pose a risk.
Monitor Overall Health: Manage conditions such as diabetes and high blood pressure, as they can increase your risk of glaucoma.
Conclusion: Protect Your Vision from Glaucoma
Glaucoma is a serious condition that can lead to permanent vision loss if left undetected and untreated. However, with regular eye exams and proper management, you can protect your vision and maintain your quality of life. Early detection is the key to staying ahead of this “silent vision thief.”
Book Your Eye Exam at Invision Eye Clinic Today
At Invision Eye Clinic in Oakville, Ontario, we use advanced diagnostic tools and personalized care to detect and manage glaucoma. Our experienced team is here to help you protect your vision and support your long-term eye health. Don’t wait until symptoms appear—contact us today to book your eye exam and take a proactive step toward healthy vision.