Permanent lump after Botox 1 year ago. Does anyone know what this Dr could have done to me?

Thank you for your question and sorry that you have had such a problem following your treatment. Have you been back to your Doctor to have this reviewed. It is quite unusual. 
Around the eyes there are several blood vessels and if these are inadvertantly struck by the needle, you can bruise - at the extreme develop a small haematoma. This should really resolve so I would be quite surprised that it has persisted.
My only thought here is whether he injected to deep and you have a deeper haematoma that has now granulated. Depending on where he injected, the lacrimal gland sits in the outer corner of the eye and can sometimes protrude downwards. If he was not concentrating and went to close to this area, then h could have inadvertantly struck this which cold cause some scarring also. The final thought is that he damaged a small amount of fat that is present and this fat globule died off (underwent necrosis). This could leave a lump that would eventually dissolve as the body breaks it down. Massaging will help or worst case to have it surgically removed. 
Best thing would be to go back for the doctor to see the lump 
I hope this is helpful, 
BW
Rohit Seth
Plastic. reconstructive, aesthetic and hair transplant surgery

Thank you for your question. It is difficult for me to give you advice without examining you in person. However, this is not typical of Botox and I recommend having a consultation with expert for and evaluation and treatment. Best of Luck!