Botox is a common non-surgical cosmetic procedure that is used to treat certain cosmetic imperfections of the face and neck area. It works by relaxing certain targeted muscles which in turn can smooth out frown lines and reduce wrinkles.
An experienced Botox practitioner knows the exact location and concentration to inject the Botox to get the desired results. However, a poorly trained clinician could in theory inject into the wrong nerve and cause visual problems.
If Botox is inadvertently injected into any of the muscles that control eye movements this could cause problems such as double vision and eye strain. If the Botox is injected into the muscles which control the eyelids, you could also experience a drooping eyelid which may also affect your vision.
Should you experience any of these symptoms you should return immediately to your practitioner to get confirmation that this is the cause. If it is the eye muscles that have been affected then there is very little that can be done about it other than to wear glasses to correct the double vision. The good news, however, is that the effects of Botox typically only last around 4 months, after which time both the positive cosmetic effects and the potential side effects will fully wear off. If you have a drooping eyelid then it is possible to treat this with daily eye drops until the Botox wears off. To read more about how long Botox lasts you can click here.
In summary, although Botox can affect your vision the chance of this happening is extremely rare.
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