Visible-light skin transilluminator

A visible-light skin transilluminator is a handheld, light-based tool that shines visible light (like red LEDs) through the skin to make underlying tissues appear translucent. Clinicians use it primarily to identify veins for procedures such as venipuncture or sclerotherapy, as well as to inspect subcutaneous or scrotal tissues for abnormalities like lesions or structural issues.

These devices are generally classified as medical instruments and may require regulatory compliance depending on jurisdiction, often falling under categories for diagnostic or procedural aids. They are typically sold as single-use or reusable, depending on the model, and are designed for use in clinical, home, or point-of-care settings where vein visualization is needed.