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You should be able to view with both eyes open as you would when seeing normally. Step 2^ Located in-between the eyepieces in the middle of the binoculars is a knurled wheel. This is the focusing mechanism. While holding the binoculars up to your eyes, turn the center focusing mechanism. Turning this mechanism will quickly bring your target into focus. Step 3) For fine-tuning; there is a smaller mechanism located on the right eyepiece tube. Turn this wheel for small adjustments in viewing.