... transmit light system, the fiber optics extend to the tip of the instrument for more light output, less glare.2. 2.5 ... .4. 19 lenses from 0D to ±20D: 0D, ±1D, ±2D, ±3D, ±4D, ±6D, ±8D, ±10D, ±15D, ±20D.5. Aperture wheel: red ... be apart from reflector 150mm: =85 lxDiopter: 0D, ±1D, ±2D, ±3D, ±4D, ±6D, ±8D, ±10D, ±15D, ±20DAperture: red-free filter, Large ...