Keeler Pocket Ophthalmoscope (Standard AA Battery Type) Engraving:Engraving easily activated and lockable for

easily activated and lockable for safety

fast and economical

one-hand release-system allows opening with just one thumb or finger

Conveniently includes cotton wool balls

Keeler Pocket Ophthalmoscope (Standard AA Battery Type) Engraving:Engraving easily activated and lockable forPocket Ophthalmoscope 6 apertures: Small allows quick entry into small, undilated pupils. Medium provides excellent view of fundus through an undilated pupil. Large general examination of the eye through dilated pupil. Red Free Fixation Cross cross hairs for measuring eccentric fixation or locating lesions. Slit used to determine levels of lesions and tumors. Red Free filters out red light for easy identification of veins, arteries and nerve fibers.