1. Glaucoma Tests: What to Expect & Results (includes visual field testing). Cleveland Clinic. https://my.clevelandclinic.org/health/diagnostics/22698-glaucoma-tests. Accessed January 30, 2026.
2. Glaucoma Tests (includes visual field testing/perimetry). MedlinePlus. https://medlineplus.gov/glaucomatests.html. Accessed January 30, 2026.
3. Glaucoma Tests. Glaucoma Research Foundation. https://glaucoma.org/articles/glaucoma-tests. Accessed January 30, 2026.
4. Glaucoma (peripheral vision loss overview). National Eye Institute. https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/glaucoma. Accessed January 30, 2026.
5. Glaucoma (visual field and peripheral vision discussion). University Hospitals. https://www.uhhospitals.org/services/ophthalmology/conditions-and-treatments/glaucoma. Accessed January 30, 2026.
6. Glaucoma: Surgical Treatment Options (background on glaucoma and optic nerve damage). Cleveland Clinic Abu Dhabi. https://www.clevelandclinicabudhabi.ae/en/health-hub/health-resource/treatments-and-procedures/glaucoma-surgical-treatment-options. Accessed January 30, 2026.