when the picture is too close to your face you lose the sight, when the future is too close to your face you see the light.

Scarlett activated the viola and it came down like short shimmering curtain that covered her eyes with a band of violet light. It dilated her eyes, increasing her binocular summation so that everything in her field of vision was magnified and clear. It also protected her retinas from any sort of laser fire or plasma flash.