A condition where the eyelids are abnormally wide open or separated, either because muscles are weak or the eyelids don't close completely.
From Greek 'blepharon' (eyelid) + 'diastasis' (separation or standing apart). The term combines the anatomical location with a general pathological concept of abnormal spacing or separation found throughout medicine.
An inability to close your eyelids completely — called 'lagophthalmos' — sounds minor but is actually serious because your eyes need to be covered by tears and mucus membranes during sleep; people with blepharodiastasis risk dry eyes, corneal ulcers, and even blindness if untreated.
Complete word intelligence in one call. Free tier — 50 lookups/day.