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Chronic Glaucoma — Diagnosis, Monitoring, and Modern Treatment

Comprehensive management of chronic glaucoma, the leading cause of irreversible blindness worldwide, including primary open-angle glaucoma, normal tension variants, and contemporary treatment with medications, laser, and minimally invasive surgical approaches.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Göz Hastalıkları department. Book Appointment →

What is Chronic Glaucoma — Diagnosis, Monitoring, and Modern Treatment?

Chronic glaucoma represents a heterogeneous group of progressive optic neuropathies sharing characteristic features of optic disc cupping with corresponding visual field loss, often (but not always) associated with elevated intraocular pressure (IOP). Primary open-angle glaucoma (POAG) accounts for approximately 75% of glaucoma cases and is characterized by an open anterior chamber angle, gradually progressive optic nerve damage, and absence of identifiable secondary cause.

Important variants include normal tension glaucoma (NTG, where typical glaucomatous damage occurs at IOP <21 mmHg), pseudoexfoliation glaucoma (associated with LOXL1 gene mutations and exfoliation material on lens capsule), pigmentary glaucoma (younger myopic patients with iris transillumination defects), and uveitic glaucoma (secondary to inflammatory eye disease). Angle-closure glaucoma is anatomically and managementally distinct, requiring different therapeutic approach.

Diagnosis requires comprehensive evaluation including IOP measurement (Goldmann applanation tonometry), gonioscopy assessing anterior chamber angle, optic disc evaluation (cup-to-disc ratio, neuroretinal rim thickness, disc hemorrhages, peripapillary atrophy), automated visual field testing (Humphrey 24-2 or 30-2 standard), optical coherence tomography quantifying retinal nerve fiber layer and ganglion cell complex, and pachymetry adjusting IOP measurements. Modern treatment paradigms increasingly favor early intervention, with selective laser trabeculoplasty (SLT) recommended as first-line therapy in the LiGHT trial. Topical prostaglandin analogs (latanoprost, bimatoprost, travoprost) are highly effective monotherapy options. Combination drops, beta-blockers, alpha-agonists, and carbonic anhydrase inhibitors provide adjunctive options. Minimally invasive glaucoma surgery (iStent, Hydrus, Xen, Preserflo) bridges medical management and traditional filtration surgery (trabeculectomy, glaucoma drainage devices).

Symptoms

Asymptomatic in early to moderate stages
Gradual peripheral visual field loss progressing to tunnel vision
Difficulty with night driving or low-light environments
Bumping into objects or missing steps (peripheral visual field loss)
Detection through routine eye examination most common
Late-stage central vision loss when extensive damage has occurred
Pain and acute vision loss only in angle-closure (different entity)

Risk Factors

Elevated intraocular pressure (most important modifiable factor)
Family history of glaucoma (3-9 fold increased risk)
African American or Hispanic ethnicity (POAG risk)
Asian ethnicity (angle-closure risk)
Age over 60 years
High myopia (open-angle) or hyperopia (angle-closure)
Thin central corneal thickness, low ocular perfusion pressure

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Routine glaucoma screening at age 40, more frequently with risk factors
  • Family history of glaucoma warranting earlier and more frequent screening
  • Visual field changes or peripheral vision loss
  • Halos around lights or other visual disturbances
  • Newly diagnosed elevated intraocular pressure
  • Optic disc abnormalities detected on examination
  • Suspicious findings on optical coherence tomography

Treatment Methods

01
Selective laser trabeculoplasty (SLT) as first-line therapy (LiGHT trial)
02
Topical prostaglandin analogs (latanoprost, bimatoprost, travoprost) as first-line medication
03
Beta-blockers, alpha-agonists, carbonic anhydrase inhibitors as adjunctive medications
04
Combination eye drops for compliance and efficacy
05
Minimally invasive glaucoma surgery (MIGS): iStent, Hydrus, Xen, Preserflo
06
Trabeculectomy with mitomycin-C for moderate to advanced disease
07
Glaucoma drainage devices (Ahmed, Baerveldt) for refractory cases

Which Department to Visit?

You can visit our Göz Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Göz Hastalıkları Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.