Operation microscope 1.Ophthalmology, neurosurgery, 2.plastic surgery, microsurgery Operation microscopeSpecifications:Eyepiece Magnifications 12.5X/18BMagnifications for Main Microscope f300: 3X 5X 8X 12X 19X f350: 2.5X 4X 6.5X 10.5X 16.5XMagnifications forf300: 5X 7.5X 11X Assiatant Microscope f350: 4X 6X 9.5XAdjustable Range of Main&Assistant Eyepiece 45mm ~ 80mmAdjustable Diopter of Main& ...