expression, godan verb (-su)
feast one's eyes on; delight one's eyes
Idiomatic expression meaning to visually enjoy something beautiful or pleasing. Often used with a target marked by に or で.
美しい景色に目を喜ばせた。
I feasted my eyes on the beautiful scenery.
彼女は色とりどりの花で目を喜ばせている。
She is delighting her eyes with the colorful flowers.