Do eye exercises help ptosis even by just a little?

In my experience, exercises do not help to improve ptosis.  I have not seen ptosis improve from patients doing exercises.  The best and most predictable treatment is surgical repair.  It is important to choose a surgeon who is specifically trained in ptosis surgery and also has a lot of experience doing the surgery.  Good Luck.

Eyelid ptosis happens because the muscle that lifts the upper eyelid gets stretched/loose from constant work!  The muscle lifts the eyelid 20,000 per day! So further exercising not only doesn't help, it can make it worse. The only effective treatment is eyelid ptosis surgery, which can be done under local anesthesia.

As stated by others, most commonly ptosis of the upper eyelid is caused by a disinsertion of the tendon that is used to lift the eyelid.  Surgery repairs this disinsertion.  "Exercising" the eyelid or manipulating stresses the tissue insertion of the levator and foreseeably will make the problem worse.  Ptosis is corrected with surgery.