Welch Allyn 777 Wall Unit - Coaxial Ophthalmoscope and Diagnostic Otoscope with an Aneroid Sphygmomanometer and a Specula Dispenser. Green Series™ 777 Wall Transformer: • Help reduce facility cost with a more energy efficient product • Help reduce risk of cross contamination by reducing contact with no on/off switch • Help improve work flow with contoured handles that automatically turn on/off • Quickly and easily upgrade from the Welch Allyn 767 Wall Transformer to the GS 777 Wall Transformer. Coaxial Ophthalmoscope: • Halogen light for true tissue colour and consistent, long-lasting performance • The coaxial optics produce a shadow-free spotlight, easier entry into undilated pupils and a larger field of view compared to standard ophthalmoscopes • 6 apertures: - MicroMicro - allows quick entry into small, undilated pupils - MediumSmall - provides excellent view of fundus through an undilated pupil - LargeLarge - general examination of the eye through dilated pupil - FixationFixation - graduated cross-hairs for measuring eccentric fixation or locating lesions - SlitSlit - used to determine levels of lesions and tumors. - Cobalt FreeCobalt blue - used with flourescein dye to view small lesions, abrasions and foreign objects on the cornea • 2 filters can be used in conjunction with any of the above apertures: - Red FreeRed-Free filter - filters out red light for easy identification of veins, arteries and nerve fibers. - Polarising filterPolarising filter - virtually eliminates corneal reflection. • 28 focusing lenses with a range of -25 to +40 diopters, adjustable via easy-to-reach maywheel • Rubber brow-rest prevents scratching of eyeglasses • Variable illumination strength via the handle rheostat dial.
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