Retina affected by age-related macular degeneration Age-related macular degeneration (AMD) is the leading cause of vision loss in people over 60. It affects 10 million Americans. That’s more than cataracts and glaucoma combined. The causes of AMD are not known but are believed to involve a mixture of hereditary and environmental factors. There is no … Continue reading CIRM-funded study helps unlock some of the genetic secrets behind macular degeneration