Glaucoma is the leading cause of irreversible blindness, but early detection and ongoing management can preserve your vision. Learn how ProVision Eye Associates monitors and manages glaucoma in Blue Bell, PA.
What Is Glaucoma?
Glaucoma is a group of eye diseases that damage the optic nerve — the critical connection between your eyes and your brain. In most cases, this damage is caused by elevated intraocular pressure (IOP), though glaucoma can also occur with normal pressure. Because glaucoma causes no pain and no symptoms in its early stages, it is often called the "silent thief of sight."
According to the Glaucoma Research Foundation, more than 3 million Americans have glaucoma, but only half know it. Once vision is lost to glaucoma, it cannot be restored — which is why early detection and consistent monitoring are essential.
Types of Glaucoma
Open-Angle Glaucoma is the most common form, accounting for about 90% of all cases. The drainage angle of the eye remains open, but the trabecular meshwork gradually becomes less efficient at draining fluid, causing IOP to rise slowly over time. Vision loss begins in the peripheral field and progresses inward — often going unnoticed until significant damage has occurred.
Angle-Closure Glaucoma occurs when the iris physically blocks the drainage angle, causing a sudden and dramatic rise in IOP. This is a medical emergency requiring immediate treatment. Symptoms include severe eye pain, headache, nausea, and blurred vision with halos around lights.
Normal-Tension Glaucoma is a form where optic nerve damage occurs despite IOP within the normal range (10–21 mmHg). The cause is not fully understood but may involve reduced blood flow to the optic nerve.
How ProVision Monitors Glaucoma
At ProVision Eye Associates in Blue Bell, PA, our glaucoma evaluation and management protocol includes:
Intraocular Pressure (IOP) Measurement performed at every comprehensive exam using non-contact tonometry and, when indicated, Goldmann applanation tonometry — the gold standard for IOP measurement.
OCT (Optical Coherence Tomography) providing high-resolution imaging of the optic nerve head and retinal nerve fiber layer (RNFL). OCT can detect structural changes before functional vision loss occurs.
Visual Field Testing (Perimetry) mapping the full extent of your peripheral vision. Characteristic patterns of visual field loss confirm diagnosis and track progression over time.
Optic Nerve Photography providing a baseline image for comparison at future visits to identify subtle changes in cup-to-disc ratio.
Pachymetry (Corneal Thickness Measurement) used to adjust IOP readings for corneal thickness accuracy.
Glaucoma Treatment Options
Prescription Eye Drops are the most common first-line treatment. Prostaglandin analogs (latanoprost, travoprost) are highly effective at reducing IOP. Beta-blockers, alpha-agonists, and carbonic anhydrase inhibitors may also be used.
Selective Laser Trabeculoplasty (SLT) uses targeted laser energy to improve drainage through the trabecular meshwork. SLT is now recommended as a first-line treatment option and can reduce or eliminate the need for daily eye drops.
Surgical Intervention — For patients who do not respond adequately to drops or laser, surgical procedures such as trabeculectomy or minimally invasive glaucoma surgery (MIGS) may be recommended. We co-manage closely with a trusted ophthalmologist in these cases.
Who Should Be Screened?
The American Optometric Association recommends annual exams for those with elevated risk factors:
- •Family history of glaucoma
- •African or Hispanic ancestry
- •Elevated intraocular pressure
- •Thin central corneal thickness
- •History of eye injury or surgery
- •Long-term corticosteroid use
- •Diabetes or cardiovascular disease
ProVision Eye Associates provides comprehensive glaucoma screening, monitoring, and medical management for patients throughout Blue Bell, Lansdale, Ambler, Horsham, North Wales, and Montgomery County, PA. Schedule your evaluation today.
