Hello and thank you for your question. A formal evaluation would be needed to determine the best treatment. There are both surgical and non-surgical options to correct this, depending on your specific situation.
For less significant puffiness and sagging UNDER the eyes, or more mild...
Typically webbing does improve with time and scar modulation (5FU). If not resolved a Z plasty is required to improve the webbing. Best to see an eyelid expert as this is a delicate revision surgery.
Most likely The main problem is not the upper eyelid, it is the weakness of the lower eyelid.
You need to be see by an Ophthalmologist Specialist in Oculoplastic surgery to treat the condition you are now.
Be encouraged.
Dr. Cardenas