Welch Allyn Ophthalmoscope #11720 (head only)

FEATURES: Halogen  Lamp that provides 30% more light output, for true tissue color and consistent, long lasting illumination.
Coaxial optical system for shadow-free spot and easier entry into undilated pupil.
Crossed linear polarizing filter to reduce corneal reflection.
6 apertures for all general and specialist use with 18 possible aperture combinations for greater versatility.
Red-free filter for use with any aperture.
28 lenses -25 to +40 diopters for better resolution.
Rubber brow rest prevents scratching of eyeglasses.
Illuminated lens dial clearly identifies setting. Sealed optics for better dust protection.