watch with an eagle eye

watch somebody/something with an eagle eye

also watch somebody/something with eagle eyes

to watch someone or something very closely and carefully

Usage notes: An eagle is a large bird which can see very well.

The teacher was watching the children with an eagle eye, making sure they behaved themselves.

Name	Pronounced	Usage
Markuss	-	Latvian
Kittie	['kiti]
El	-	Near Eastern Mythology
Nicomedes	-	Ancient Greek (Latinized)
Izidor	-	Slovene
Kepheus	-	Greek Mythology