Dynamic evaluation of the diameters of central fundus vessels, 2nd order and peripheral vessels as well as the tortuosity index of central zone arteries in stage II and III retinopathy of prematurity (ROP), which showed regression after laser treatment, was performed. Obtained data can be used for estimation of the optimal follow-up period ensuring early detection of high probability for ROP progression after laser coagulation and decrease of the number of diagnostic examinations for patients whose pathologic process is resolving.