Hi there,
If you've had ptosis correction on one eye which has led to the formation of a double eyelid, there generally tends to be a period of 6-8 weeks required for the swelling to settle down before seeing what the final result is like.
This way, if you desire symmetricalizing procedures to the other upper eyelid, you can then be assessed for the most appropriate procedure during this time.
Hope this helps.
Dr Adrian