Ptosis is what we call it when eyelids don't appear fully open.
It is often one sided, and can be caused by serious medical conditions. You should get ptosis evaluated, especially if it is a new finding. Dermatochalsis is the term for extra upper lid skin which is wrinkled & causes drooping upper lids. This is slow & progressive. It is due to aging and geneics and can be corrected w surgery.