What is the relationship between blindness and age-related macular degeneration?

Damage retina. Armd causes damage to the rods and cones of the retina. You need rods and cones to see. If its damaged you have blindness.
Depends. Age-related macular degeneration (armd) affects only central vision. While patients may lose ability to read, they never go completely blind. Patients with armd can become "legally blind." peripheral, or side vision, is preserved. Blindness, where patients can't detect movement or light (everything is dark), is complete loss of central and peripheral vision.