Comparative characteristic of the vascular microcirculation indices was adduced in 49 patients, operated on in 2008 - 2013 yrs for stricture of pyeloureteral segment on the base of surgical centre of Scientific--practical Centre of prophylactic and clinical medicine and urological department of Lviv rural clinical hospital. The method of biomicroscopy and microphotography of conjunctiva was applied preoperatively, on a 5th and 14th days postoperatively with determination of vascular, intravascular, extravascular and common conjunctival indices. There was established, that after laparoscopic pyeloplasty the changes in vascular and coagulation systems in patients, suffering hydronephrosis, are less expressed (it is mostly representative on the 5th day), what reduces significantly a potential danger for intravascular thrombosis occurrence.