In this context, the use of a noun for ‘eyes’ as the direct object of the verb thelgein ‘put a trance on, enchant’ shows the visual connotations that are built into this verb. See the comment on I.02.308, with reference to the omen about the serpent and the nine birds: here the etymology of drakōn ‘serpent’ as ‘the one who looks [derkesthai]’ is relevant.