9 weeks post upper/lower blepharoplasty and I still have severe chemosis on one eye. Will this heal and how long will it take?

Chemosis after eyelid surgery, or what I call jelly eye, is very common, but it should have resolved by now. You should see an eye doctor. Occasionally, Chemosis has to be surgically removed.

                  Chemosis
occurs in a small percentage of patients following blepharoplasty. This
condition is related to swelling of the lining of the eye which is known as the
conjunctiva.

                  The
condition usually resolves spontaneously, but may last for several months.
Treatment usually involves lubrication of the eye with topical agents to
prevent drying and occasionally topical steroids. When the condition persists,
an ophthalmology consultation is appropriate. 

Chemosis is a common problem after eyelid surgery, and affects 5-10% of patients. In some cases, it may persist for weeks or months. It sounds like you have been doing all the right things (drops, usually containing a steroid; lubricant ointments).  Antibiotics are useful if there has been any damage to the surface of the eye, to prevent infection. In particularly difficult cases, sometimes the eyelids need to be temporarily closed, using a special type of stitch (tarsorraphy). In severe cases, an experienced ophthalmologist can actually lance the area and drain some fluid. A second opinion would be a good investment.