There are a number of indications for performing a vitreous biopsy, which is typically performed for diagnostic purposes but can also be a therapeutic measure to remove vitreous opacities to clear the visual axis. Typical indications include confirmation of suspected vitreoretinal lymphoma as well as identification of the etiology of infectious endophthalmitis, particularly in cases where a needle vitreous tap has not yielded a causative organism or to identify atypical infectious organisms. When performing a vitreous biopsy, obtaining an undiluted specimen can improve the diagnostic yield. In today’s episode, returning guest surgeon Dr. Abbas Haider from Chattanooga Tennessee demonstrates a technique of obtaining an undiluted specimen by infusing air during vitrectomy. We want to thank Dr. Haider for his contribution!
