The intrinsic value of a fine binocular lies in its ability to produce bright, sharp, aberration-free images. But you can only get the most out of your optic if you know how to adjust a binocular.

Binocular vision dysfunction (BVD) is a condition that affects vision. It can cause a range of symptoms, such as double vision, light sensitivity, pain with eye movement, and more. BVD makes it ...