Floppy eyelid syndrome (FES) is a disease whose most prominent features often include floppy upper eyelids that can be easily everted, as well as papillary conjunctivitis.^[1] It is often associated with patients with high body mass index and obstructive sleep apnea.

Floppy eyelid syndrome is thought to revolve around the upregulation of elastin-degrading enzymes, as well as mechanical factors. These can cause instability of the eyelid scaffold, resulting in the malposition of the eyelid.^[2]

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