DALLAS—In its continuing effort to raise awareness about the need for healthy vision worldwide, the Vision Impact Institute has gathered concise facts on vision economics and listed them here as the Ten Things You Need to Know. Among them are the fact that poor sight is linked to 59 percent of road accidents worldwide and the fact that up to 70 percent of U.S. juvenile offenders have undiagnosed poor vision. Read all ten and find out how many you know.