There is a side effect that occurs when prism and lens power are in the same lens. It can be experienced with either monocular vision or binocular vision. And a small group of patients using it may feel some dizziness or disorientation at first. This condition would be passed after the first few minutes of usage. Otherwise, you have to stop using it.
Like every coin has two sides. Prism glasses may cause some discomfort to you. In fact, there are some patients wearing prism glasses experience some dizziness or disorientation at the first time. Usually, this dizziness or disorientation will last first few minutes when they wear the eyeglasses. If you feel dizziness/disorientation at the second attempt, you'd better visit an doctor and ask their advice.