Glaucoma is a group of eye conditions that damage the optic nerve, the part of the eye responsible for sending visual information to your brain. This damage is often caused by increased pressure inside the eye (intraocular pressure), but glaucoma can also occur even with normal eye pressure. Because glaucoma usually develops slowly and painlessly, many people don’t notice symptoms until vision loss occurs — making early detection essential.
Why It’s Serious
Glaucoma is one of the leading causes of irreversible blindness, but vision loss can be prevented if it’s diagnosed and treated early. Regular comprehensive eye exams are the best way to detect glaucoma before significant damage occurs.
Types of Glaucoma
1. Open-Angle Glaucoma — The most common type. Caused by gradual clogging of the eye’s drainage system, leading to increased pressure. Develops slowly and painlessly.
2. Angle-Closure Glaucoma — Occurs when the drainage angle suddenly becomes blocked, causing rapid pressure rise. This is a medical emergency that can cause sudden vision loss, severe eye pain, nausea, and halos around lights.
3. Normal-Tension Glaucoma — Optic nerve damage occurs despite normal eye pressure levels.
4. Secondary Glaucoma — Caused by another condition (injury, inflammation, medications, or diabetes).
What Happens During a Glaucoma
Exam A glaucoma evaluation may include:
– Eye Pressure Measurement (Tonometry) — Checks intraocular pressure.
– Optic Nerve Examination — Using special lenses or imaging (OCT) to detect early nerve damage.
– Visual Field Test — Measures peripheral (side) vision, where glaucoma often begins.
– Corneal Thickness Measurement (Pachymetry) — Helps interpret eye pressure readings accurately.
– Angle Examination (Gonioscopy) — Evaluates how well fluid drains from the eye.
Treatment Options
Although glaucoma damage cannot be reversed, treatment can slow or stop further vision loss. Treatment depends on the type and severity of glaucoma and may include:
1. Prescription Eye Drops — The most common treatment to lower eye pressure by reducing fluid production or improving drainage.
2. Laser Treatment — Selective Laser Trabeculoplasty (SLT) helps improve fluid drainage. Laser Iridotomy is used for angle-closure glaucoma.
3. Surgery — Procedures like trabeculectomy, tube shunts, or minimally invasive glaucoma surgery (MIGS) create new drainage channels to control pressure.
4. Ongoing Monitoring — Regular eye exams, imaging, and visual field testing are essential to track progress and protect vision.
Living with Glaucoma
– Take your medications as prescribed — consistently and correctly.
– Attend all follow-up appointments.
– Inform your doctor if you experience new vision changes or side effects.
– Encourage family members to get screened — glaucoma can run in families.
Summary
Glaucoma is a lifelong condition, but with early detection and proper management, most people can preserve their vision for life. Routine eye exams are the key to protecting your sight.
At our ophthalmology clinic, we understand the importance of accessible and efficient eye care services
