I feel the light from the sun, bright lights like bright car headlights and street lights, and very bright lasers may also harm people's eye sight more than smartphones where you can adjust the brightness and contrast to be not as bright.
In a way, smartphones maybe saving some people's eyesight because people can look at pictures of the sun, bright car headlights, and bright lasers instead of looking at the real sun, and other very bright light sources which can damage your eyesight if the light is very bright or gives off uv radiation like the sun.
I saw a few news stories of people suffering eye damage because they looked at the sun, solar eclipse where the moon's shadow block the sun, and someone shined a laser pointer in their eye of an airplane pilot which caused vision damage.