RESUMO
PURPOSE: To compare the effectiveness of four biostains in vitreous staining as a means to facilitate clean anterior vitrectomy. MATERIALS AND METHODS: Four biostains (fluorescein, indocyanine green, trypan blue, and triamcinolone acetonide) were used to stain the transparent vitreous of human cadaver and monkey cadaver eyes. Results were compared and recorded by digital photography and videography. RESULTS: Of the four biostains, triamcinolone acetonide best highlighted the vitreous. Although fluorescein, indocyanine green, and trypan blue also produced acceptable vitreous staining, the surrounding ocular structures were slightly stained as well. CONCLUSION: All four biostains enhanced visualization of the vitreous. However, triamcinolone acetonide best highlighted the vitreous.