**Abstract**

Methods and results of the developed vitreous body imaging technique in proliferative diabetic vitreoretinopathy diagnostics using new contrast dye during operation. The P. Kroll"s classification of proliferative diabetic retinopathy was modified after receiving new data about vitreoretinal interface structures during investigation using chromovitrectomy.

**Keywords:** vitreous, anatomy, diabetes, retinopathy, diagnostics chromovitrectomy
