'blepharal' originates from Greek, specifically the word 'blepharon', where 'blephar-' meant 'eyelid'.

'blepharal' changed from New Latin 'blepharalis' (from Greek 'blepharon') and eventually became the modern English word 'blepharal'.

Initially, it meant 'pertaining to the eyelid', and this meaning has largely remained unchanged in modern usage.