A. Unilateral Processes
- Retinal Detachment
- Optic Neuritis (unless bilateral)
- Ischemic Optic Neuropathy
- Blindness
B. Bilateral Processes
- Glaucoma
- Cataracts
- Relative Blindness
C. No Afferent Pupillary Defect
- Optic Neuritis (only if bilateral)
- Papilledema
- Toxic / Deficient Optic Neuropathy
D. Advanced Glaucoma (nearly blind)