Glaucoma is often referred to as the "silent thief of sight" because it typically progresses without pain, discomfort, or early visual symptoms. By the time noticeable vision loss occurs, significant and permanent damage to the optic nerve has already taken place.
Why Intraocular Pressure (IOP) Matters
Inside the healthy eye, clear fluid (aqueous humor) flows continuously, maintaining normal internal pressure. In glaucoma patients, fluid drainage becomes impaired, causing intraocular pressure (IOP) to rise. This increased pressure puts excessive strain on the delicate nerve fibers of the optic nerve, leading to irreversible loss of nerve function.
Key Warning Signs & Risk Factors
- Gradual Loss of Peripheral Vision: Missing side vision in one or both eyes, often starting in the outer visual fields.
- Tunnel Vision: Advanced stages leave only a narrow central field of vision intact.
- Severe Eye Pain & Rainbow Halos: In acute angle-closure glaucoma, sudden spike in IOP causes severe eye pain, headache, blurred vision, nausea, and rainbow-colored halos around lights.
- High Risk Profiles: Individuals aged over 40, people with a family history of glaucoma, diabetics, and high myopes (nearsightedness).
Advanced Diagnostic Procedures at Eye Nexa
Because early glaucoma has no symptoms, routine screening is vital. Eye Nexa uses state-of-the-art diagnostic technology:
- OCT Optic Nerve Head Analysis: Microscopic cross-sectional imaging of retinal nerve fiber layers (RNFL) to catch nerve thinning years before vision loss occurs.
- Goldmann Applanation Tonometry: Gold-standard precision measurement of intraocular pressure.
- Humphrey Visual Field Testing (Perimetry): Computerized mapping of side vision sensitivity to detect subtle visual field defects.
Modern Treatment & Management Options
Management focuses on lowering intraocular pressure to prevent further optic nerve damage:
- Targeted Medical Drops: Prescription daily eye drops that improve fluid drainage or reduce fluid production.
- Selective Laser Trabeculoplasty (SLT): Painless, non-invasive laser therapy to enhance natural drainage paths.
- Micro-Invasive Glaucoma Surgery (MIGS): Advanced surgical interventions for advanced or resistant glaucoma cases.
