A/N: My entry for Naruto100's 'Vision' challenge
Focus:
Sometimes, when he is feeling particularly philosophical, Sasuke believes his life may have been happier if he had never developed the Sharingan. When it is activated, when his eyes burn red and the black pinwheels spin, everything around him, everything he sees, takes on a vibrancy that cannot be compared to anything else in the world.
The blades of grass are sharp, and he can pick out each individual one, even trace the dark green veins within. The slightest movement, even the scuttle of a beetle, can be seen without effort. The flicker of an eyelid can be seen from a far distance, and a bead of sweat rolling down the side of the enemy's face is clear in focus.
Deactivating the Sharingan is like watching life wither. The landscape loses its luster, and people lose their realness. He likes, when he looks at someone, to activate the Sharingan, if only to preserve in his mind the way they look when the world is in focus.
When he leaves Konoha, he does not look at Sakura with the Sharingan.
He does not want those tears rolling down her cheeks to be etched into his memory.