Featuring fiberoptic light transmission for an unobstructed view and optical glass which reduces reflection and offers 3x magnification, the diagnostix otoscope offers excellent viewing capabilities. Features anti-theft locking. Coax Ophthalmoscope: the coax ophthalmoscope utilizes an aspherical condenser lens to reduce corneal refelction. This ophthalmoscope features an ergonomic design and thumbrest for improved stability and one-finger control, and a magnified, illuminated viewing pane. It is dust-resistant. Coax Plus ophthalmoscope: as well as the features of the coax ophthalmoscope, the coax plus features a secondary focus wheel for either the correction of ametropias or as a virtually limitless fine-focus lens. It also has an added karo aperture, allowing easier transfer of readings to karo graph paper.