“…For many years ophthalmologists have tried to prevent post-extractive hyphoema by drugs ranging from calcium lactate, through snake venom to adrenochrome. In spite of papers suggesting that such measures are without effect (de Voe 1942, Stalker 1956) they continue to be used. Arruga's autidote (1952), a corneal section in front of the episcleral plexus, has passed largely unremarked.…”