Welch Allyn Ophthalmoscope head has a high-intensity halogen illumination bulb with a mirror optical system. 28 lenses with illuminated lens dial. Apertures (microspot, small spot, large spot, fixation, red-free, and slit) for all diagnostic applications.

Welch Allyn product code is 11710.
- 3.5V Halogen Ophthalmoscope Head.