e-scope ophthalmoscope LED 3.7 V, black, in case

e-scope ophthalmoscope LED 3.7 V, black, in case

• LED illumination gives 5500K pure white light for true tissue colour.
• Low power LED technology gives a practically unlimited service life.
• Optimised high performance optics with aspherical condenser lens to reduce aberrations.
• 6 apertures:
  • Small - allows quick entry into small, undilated pupils.
  • Large - general examination of the eye through dilated pupil.
  • Fixation Star - graduated cross-hairs for measuring eccentric fixation or locating lesions.
  • Semi Circle - for a combination of depth perception and field of view.
  • Red-Free filter - filters out red light for easy identification of veins, arteries and nerve fibers.
  • Cobalt blue - used with flourescein dye to view small lesions, abrasions and foreign objects on the cornea.
• 18 focusing lenses with a range of -20 to +20 diopters, adjustable via easy-to-reach maywheel.
• Soft brow-rest suitable for use with spectacles.
• Handle powered by 2 regular AA alkaline batteries (not included)