Can Botox Cause Vision Loss?

In general, Botox is a very safe medication to use. There is no association of Botox causing, inducing, or increasing your chances of developing cataracts. In other words, the development of the cataract in one of your eyes is unrelated to the recent use of Botox. I would advise you to continue your follow-up with a board certified ophthalmologist. Thanks for your question and I hope this helps!

It is unlikely that you have had vision loss secondary to Botox injections. I have never heard of this before. 

  Botox is a very powerful and effective medication that helps muscles relax once it is absorbed by them. If Botox is placed around muscles that control the position of the eyelid, some drooping as possible. However, Botox will not affect visual perception. Discuss with your doctor other more likely causes for the decrease in your vision

I have never heard of Botox causing a loss of vision. Properly injected, it is well away from the eye. Occasionally, a poorly placed injection might cause a "droopy" upper eyelid.

It sounds like your Botox injections were unremarkable when they were done. Starting to lose vision one month later because of an early cataract is most likely completely unrelated and would have started to happen whether you had Botox or not. In general, doopy eyelids and double vision are the potential side effects that we worry about most. Make sure your ophthalmologist and your Botox physician have communicated as it is always good to keep everyone in the loop.

I have never seen it and never seen it reported in the literature, but there are cases of sudden blindness that can just occur. So, if you had either a botox injection, or a peanut butter and jelly sandwich and all of a sudden go blind in one eye, is it caused by either of them or just bad luck. We believe it would be just bad luck. Botox so far has been very safe.

Hi Wendy, No, Botox will not cause vision loss, especially delayed vision loss.  Good luck with your vision.  Do stay in touch with your opthalmologist. Dr. P

I think we collectively have sufficient experience and data with Botox to conclude that it does not cause vision loss. Botox can uncommonly cause eyelid drooping and double-vision, but not cataracts, retinal detachment, macular degeneration or any such thing. The cataract you have developed is almost certainly unrelated.