We report a case of vitreous haemorrhage from a persistent hyaloid art
ery that occured to a 50 year-old patient. The case report is followed
by a review of the embryologic development and a physiopathologic dis
cussion about the origin of vitreous haemorrhage. The authors emphasiz
e the distinction between persistent hyaloid artery and persistent hyp
erplastic primary vitreous.