I had Xeomin injected a day ago under my eye and a blood vessel was popped in the process. Is this a concern? (photo)

Whenever a needle is used near the eye, it is possible to hit a blood vessel and get a bruise.  The bruise is not caused from the Xeomin itself, but from the needle.  It is possible that the bruise could last for a few days, but it should improve with more time.  It does not mean that you necessarily would get a bruise again if you were treated in the future.  

You have developed a small bruise after receiving an injection in your eyelid.  This does not represent a serious problem and should resolve without and residual effects.

You have a tiny bruise caused by the needle shearing a small blood vessel during injection.  It is not uncommon to have swelling and bruising following ANY cosmetic
injection, including Xeomin. Bruising after cosmetic injections can be related to
medications you are taking in the days and weeks leading up to the
injection (fish oil, Vitamin E, aspirin, motrin, aleve, ibufrofen,
etc...), your anatomy, and/ or the injection technique. I tell all of
my patients to use topical Arnica Montana, which is a natural over the
counter gel, the moment that they see a bruise forming. It helps gets rid of the bruising many days prior to not
using anything at all. Makeup is your friend right now too.  Future injections will not necessarily result in the same outcome.  In a couple weeks, you'll be so pleased with your Xeomin results that you'll forget about this small hiccup.  

I would not worry about this. It will resolve with time. Thank you for your question and for posting a picture.

Dr. Edward Dickerson explains why bruising might occur after being treated with Xeomin and what can be done to prevent or alleviate bruising.

the area around and in the eye is very vascular and any needle can puncture a small vessel. apply cool compresses and it should resolve in a few days

There is a risk with all surgical procedures, and all injectable treatments, of bleeding.  That certainly includes the potential for a needle entering a blood vessel, after which some bruising and swelling can be expected.I'm sorry for the result you have but this can occur with any injectable treatment and, as such, I don't think that you need to be overly concerned about it on a long-standing basis.You should of course be seen in person by one or more board-certified
plastic surgeons for an in-person consultation, at which time this can be discussed in more detail.

I hope that this helps and good luck,

Dr. Alan Engler
Member of #RealSelf100
@RealSelf