洗眼器是实验室内的常见安全设备 ，是在化学品进入眼睛时用以洗清的器具，以降低对眼睛的伤害。

洗眼器已经被广泛使用在全球各地方。在学校里的实验室，化验室，和医疗室必须安装此类产品。洗眼器是在紧急的使用才用上；因为很多学生在无任何防范时粘到有害化学药品在身上或在眼睛是必须在10秒以内（15公尺范围）使用到洗眼器进行暂时性的清理有害物质，几个国际认同的机构和公司都是认为受害者最好经过15分钟的清洗达到冲洗干净眼中的有害物质。15分钟的冲洗后必须联系当地医院进行检查。由此可见，洗眼器的重要性。有些地方按照当地的法律和政府要求是必须配置的；预防任何突发事件可受害者立即到洗眼器处进行洗眼。

Eyewash is a fluid, commonly saline, used in the aid of rinsing of the eye. Eyewash may also describe the apparatus used to physically wash the eyes in the case that they may be contaminated by foreign materials or substances.

Eyewashes may be beneficial to those with sensitive eyes and can provide relief to the painful side effects of sensitivity. However, prolonged usage of such products will cause mild side effects, such as the reddening of the eye and/or pupil and cause itchiness. If such symptoms occur, it is best to see one's family doctor.