[Practical experiences in conversion to the wide angle observation systems for vitreous surgery BIOM, SDI, VPF].

The wide-angle observation system for vitreous surgery introduced by Spitznas und Reiner has the following advantages: Wide angle of view. Large depth of field. Good view to the periphery even with narrow pupil. Easy gas fluid exchange in a phacic eye. Free mobility of the eye when working in the periphery. Changing from the conventional vitrectomy lens system to the BIOM an experienced surgeon is familiar with the new system in a very short time.