Health and Fitness University of Michigan Researchers use New Genetic Mapping Technique to Identify Two Genes that Can Cause Vision Loss in Seniors by Gary Kopycinski on September 16, 2013 Gary Kopycinski Author More in Health and Fitness: On Hantavirus, Park Forest Officials Urge Caution May 18, 2026 Rep. Kelly Condemns FDA Approval of Flavored E-Cigarettes May 6, 2026 Park Forest Aligns With Illinois Guidance on Childhood Vaccines Amid Federal Changes January 11, 2026 ANN ARBOR–(ENEWSPF)–September 16, 2013. Researchers at the University of Michigan pinpointed two interacting genes that, when defective, can greatly increase the risk of macular degeneration, the leading cause of vision problems in the elderly.