Afterimage Trainer !!top!! -

Occasional afterimages are normal. But if they linger too long or happen too easily, your visual system may need retraining.

Vision fatigue is real. Staring at iron sights for hours causes a dulling of focus. Law enforcement trainers are beginning to use Afterimage Trainers to improve "flash sight picture"—the ability to acquire a sight alignment in under half a second. Afterimage Trainer

There are two types: