3.5 Volt Coaxial Ophthalmoscope with Halogen Lamp Welch Allyn

Halogen HPX™ lamp provides light for true tissue color and long-lasting performance.  Coaxial optics produce a shadow-free spot, easier entry into undilated pupils, and a larger field of view versus standard ophthalmoscopes.  Detects corneal abrasions with cobalt blue filter.  Polarizing filter virtually eliminates corneal reflection.  Sealed optics keep out dust and dirt.  18 unique aperture/filter combinations for greater versatility.  Red-free filter may be used with any aperture28 focusing lenses with a range of -25 to +40 diopters.