Can I get more Botox after it left me with a lazy eye?

Since your Botox treatment was 2 weeks ago, you should be at the "full or maximal" effect of the Botox.   The effects will start to weaken at this point, although it will take 3-4 months for the Botox to completely wear off.  Since there aren't any photos, I can't tell what you mean by "left with a lazy eye."  If it means that your eyelid is drooping from unwanted diffusion of Botox to the levator muscle of your eyelid, then you can use apraclonidine drops to help with lifting your eyelid.  If it is your eyebrow that is drooping, then you will probably just need to give it time for the Botox to wear off.  I would return to your injector, have them take photos, and then compare your pre and post procedure photos to determine what is your best option.  

The drooping does not occur very often and even though it did occur in you it does not mean it will again so you can go ahead and get it again. Just be sure you discuss with the doctor your concerns and be sure you are seeing a board certified dermatologist or plastic surgeon