目视检测是质量控制过程中的一种常用的无损检测方法。在维修设备时，利用视觉、听觉、触觉和嗅觉或任何非专业检测设备。超声波、X光、红外线等检查，通常不被视为目视检查，因为这些检查方法需要专门的设备，培训和认证。

目视检测分为直接和间接两种，其区别是：

• 直接目视检查：直接使用肉眼检查，而无需中断受测物和眼睛之间的路径。
• 间接目视检查：利用照相机等非专业检测设备。

Visual inspection is a common method of quality control, data acquisition, and data analysis. Visual Inspection, used in maintenance of facilities, mean inspection of equipment and structures using either or all of raw human senses such as vision, hearing, touch and smell and/or any non-specialized inspection equipment. Inspections requiring Ultrasonic, X-Ray equipment, Infra-red, etc. are not typically regarded as Visual Inspection as these Inspection methodologies require specialized equipment, training and certification.