For nearly 100 years, Welch Allyn has earned an international reputation for developing the best in otoscopes, ophthalmoscopes, and other diagnostic tools, and high-quality light sources have been at the core of these instruments since the beginning. First with fiber optics, then with halogen, and now with LEDs, Welch Allyn has a history of leadership in providing the best in lighting technology to help caregivers see more of the human body more clearly, and better diagnose their patients' conditions. Green Series Medical Exam Lights are simply the latest step in that direction.