Blepharochalasis: a rare syndrome consisting of recurrent bouts of upper eyelid edema associated with thinning, stretching, and fine wrinkling of the involved skin. The lower eyelids are not commonly involved. These episodes often result in eyelid skin redundancy (i.e. your have way too much skin on your upper eyelids, and they sag).
Operation required: Blepharoplasty (repair [plasty] of eyelid [blepharo]).
They do a pinch test to make sure they are taking the maximum amount of skin they can, while still allowing your eyelid to close!