Model LZL-4D is a light multi-function operation microscope, It can be used in the operations such as brain surgery, ENT, ophthalmology etc. The optical routeway of the microscope adopts the parallel optical routeway and it has the features of big field depth, wide vision field and uniform illumination. If necessary, the single ocular teaching scope, camera interface and CCD interface can be chosen. The instrument also is ideal one for animal dissection and microsurgery teaching.