Vision score

Vision Score is an end-game screen stat that indicates how much vision a player provided to their team.

It is a loose measurement of vision game contribution, and can be ballparked as "about 1 point per minute of ward lifetime I'm responsible for providing/denying." It tends to be in the 5-150 range.

The "scale" of the point system is "every point of Vision Score is about equal to one minute of ward lifetime in value." So if your vision score at the end of a game is 121, you can ballpark "my vision contribution this game was worth about 2 hours of ward lifetime." This number comes from three main sources:
 * Each minute of ward lifetime you provide by placing wards will give you 1 point (can give fractions of points). There are actually a lot of modifiers to this score.
 * When you get a ward takedown (earned gold from a ward's death), you get 1 point for every minute of lifetime remaining on the ward (permanent wards are assumed to have minutes of lifetime remaining).
 * Various vision-providing mechanics have a baseline score on-use (usually to ), and can also give bonus scores if revealing unseen champions or epic monsters (usually  to ). This includes, trinket activation, ward placement, , , , and.
 * A that reveals a full  attempt will give much more than a  that reveals nothing (which will still give some score).

Trivia

 * Vision Score can be seen on the end-game of Howling Abyss games, even though most of the vision tools are removed in this game mode.