Complex sentence: Prolonged exposure up close to a Controller will leave the player's vision blurry and difficult to aim for a length of time which varies in severity and recovery depending on how long the player was exposed to the psi powers of a Controller.
Split into simpler sentences: Prolonged exposure up close to a Controller will leave the player's vision blurry, making it difficult to aim for a length of time. The duration varies in severity and recovery depending on how long the player was exposed to the psi powers of a Controller.