Researchers have developed a new heat-based treatment that could help stop dry macular degeneration by activating the eye’s natural repair systems. Credit: Shutterstock Age related macular degeneration (AMD) affects an enormous number of older adults. Around one third of people over 80 have AMD, and about 20 million Americans age 40 and older are living with the condition. Most cases are the dry form of AMD. It usually advances gradually, but over time it can damage central vision, making it