Welch Allyn Halogen Coaxial Ophthalmoscope

23 lenses. Illuminated lens dial. Sealed optics provide better dust protection. Coaxial optical system eliminates shadows and facilitates exam through virtually any size pupil or vitreous disorder. Special contoured mirror and matching lamp filament allow axis of illumination to be practically coincidental with axis of physician‘s vision. Apertures include microspot, small spot, large spot, fixation, cobalt blue, and slit.