Blepharoptosis is the medical term for low-lying, saggy eyelids. This condition causes your eyes to appear smaller than they usually would or make you look tired. Sagging upper eyelids can also affect peripheral vision. Many conditions and issues can cause droopy eyelids, including cataract surgery, medical conditions, BOTOX Cosmetic, aging, and contact lens use. Droopy eyelids can either be present from birth (congenital) or acquired, meaning it develops over time. Upneeq does not treat hereditary droopy eyelids. If you are unsure what is causing your sagging eyelids, consult with your ophthalmologist to ensure there is no underlying medical condition.