Uneven eyebrow transplant - 1 day post surgery. (photos)

There can be considerable swelling after the procedure which can distort the contour and shape of the eyebrow.If the shape is still uneven after 7-10 days I would return to your surgeon for evaluation,

Can you remember which side was done first?
The reason I ask is because the likely explanation is, the local anesthetic wears off sooner on one side resulting in asymmetric retraction of some of the muscles. The side with greater muscle tone retracts higher than the relaxed side. This may explain why the eyebrows are designed asymmetric, and only after the anesthesia has worn off and the swelling decreases does the asymmetry become noticeable.
I suggest you check in with your surgeon now.  Good news is down the line you have options ranging from reshaping the eyebrows to even revision transplant.
Ramtin A. Cohanim M.D. 

At one day post op, if you have an uneven eyebrow transplant, you should go back to see your surgeon as the hairs can be removed to balance the two eyebrows within the first 3 days, no more than that

At only 1 day post-op it is too early to assess because you still have swelling. It is important to be patient and notify the doctor so that it can be documented. At 10 days have an assessment with your hair transplant doctor and you may also have to wait for the hairs to grow in before making any final conclusions.