中文的“眼屎”英文最常说 sleep（口语），完整一点的说法是 sleep in one’s eyes
、eye gunk、eye discharge，比较医学的说法是 eye mucus。
以下例句给你参考：
I woke up with some sleep in my eyes.
我醒来的时候眼睛里有些眼屎。
She rubbed the sleep from her eyes and yawned.
她揉掉眼屎，打了一个哈欠。
You’ve got a little sleep in the corner of your eye.
你眼角有点眼屎。
Kids often have eye gunk when they wake up.
小孩子常常起床会有眼屎。
The doctor said the eye discharge was just normal and nothing to worry about.
医生说那只是正常的眼屎，没什么好担心的。