In Humphrey visual field testing, a 'double arcuate scotoma' connecting to the blind spot on both sides of fixation is MOST characteristic of which condition?
- A Ischemic optic neuropathy
- B Primary open-angle glaucoma ✓
- C Optic chiasm compression
- D Central serous chorioretinopathy
Correct answer: B. Primary open-angle glaucoma
Explanation
In glaucoma, nerve fiber bundle defects produce arcuate (Bjerrum) scotomas that arch from the blind spot and extend toward the nasal horizontal meridian. When both superior and inferior arcuate fibers are affected, a double arcuate scotoma forms, creating a 'ring scotoma' pattern. Ischemic optic neuropathy causes altitudinal field loss. Chiasmal compression causes bitemporal hemianopia. CSCR causes a central relative scotoma.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.