Home > Eye care > Macular Degeneration Diagnosis Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Feb 02, 2010 by JNJhealth, Views: 2954 Diagnosing macular degeneration: Macular degenration occurs when metabolic waste builds up in the back of the eye, causing blurry vision, and decreased night vision. Your body make new blood vessels in this area to repair the damage. But these are prone to rupture and bleeding, causing a worsening of the vision. Photodynamic therapy is an outpatient treatment that can be helpful.