Eyelid ptosis is a side effect that can occur following Dysport injections even if they are performed properly by a skilled physician. The chances of any potential side effects occurring following the injections may be due to:
1) Not choosing a qualified physician who has experience with Dysport
2) Poor technique used by the individual performing the injections
3) Injecting too much Dysport in a given area
4) Injecting the Dysport in the wrong places
Overall, it is important to do your homework prior to having Dysport injections and choose a qualified physician you are comfortable with. Thanks and good luck!