From Longman Dictionary of Contemporary Englishfix your attention/eyes/mind etc on somebody/somethingfix your attention/eyes/mind etc on somebody/somethingCAREFULto think about or look at someone or something carefully Aziz tried to fix his mind on the job at hand. Every eye was fixed on the new girl. → fix
Examples from the Corpus
fix your attention/eyes/mind etc on somebody/something• She couldn't turn round so she fixed her eyes on her two brothers on the altar.• She fixed her eyes on Mr Hollins's face and waited for his answer.• I gulped, and fixed my eyes on the blood-red pen on the desk.• She fixed her eyes on the jagged line of rocks to which she had to climb.• She fixed her eyes on the street in an attempt to calm herself. 