I see double of a red dot sight when i keep both eyes open.?

Question

i just bought my red dot scope. for red dot scopes it says you cann keep both eyes open. But when both of my eyes are open and they are consentraded on the red dot, i see two scopes instead of just one. But when i only open one eye and look at it, there is only one scope (normal). But when both eyes are open, i see two scopes. Please help

Answer 1

After reading your "additional details", if I'm understanding you right, that is normal.  You can achieve the same effect by holding a finger in front of your eyes.  While focusing on your finger you will see double in the background and while focusing on the background, you will see double of the finger.  This is perfectly normal.