METHODS: Totally 102 DR patients(102 patients)treated in our hospital from October 2015 to November 2017 were selected and divided into observation group and control group according to random number table, 51 cases in each group. The 23G minimally invasive vitrectomy was performed in all patients. From the 1^st day after operation, the two groups were treated with related treatment, and the control group was given conventional hypoglycemic, antihypertensive and improved microcirculation treatment. On the basis of the above, the observation group was treated with fenofibrate treatment. Both groups were treated for 3mo. The operation and postoperative basic conditions(operative time, intraoperative blood loss, complication rate, length of stay), the level of blood lipid \〖total cholesterol(TC), triglyceride(TG), low density lipoprotein cholesterol(LDL-C), high density lipoprotein cholesterol(HDL-C)\〗, and the serum levels of related factors \〖lipoprotein associated phospholipase A2(Lp-PLA2), vascular endothelial growth factor(VEGF)\〗 before and after 3mo of operation of two groups were compared. Following up for 6mo after operation, the recurrence rate of two groups of retinopathy was statistically compared.

RESULTS: There was no significant difference in operative time, intraoperative blood loss, incidence of complications and length of stay between the two groups(P>0.05). There was no significant difference in the levels of TC, TG, LDL-C and HDL-C between the two groups before operation(P>0.05). After 3mo, the levels of TC, TG and LDL-C in the observation group were lower than those in the control group, and the level of HDL-C was higher than that in the control group, and the difference was statistically significant(P<0.05). There was no significant difference in serum levels of Lp-PLA2 and VEGF between the two groups before operation(P>0.05). The serum levels of Lp-PLA2 and VEGF in the observation group were lower than those in the control group 3mo after operation, and the difference was statistically significant(P<0.05). There was insignificant difference in visual function and quality of life, sensory adjustment, psychological and social scores and total scores between the two groups before surgery(P>0.05). At 3mo after operation, the scores of visual function and life quality in the observation group were lower than those in the control group, and the difference was statistically significant(P<0.05). After follow-up for 6mo, no recurrence occurred in the observation group. The recurrence rate in the control group was 5.9%(3/51), and there was no significant difference between the two groups(P>0.05).

CONCLUSION: The combination of fenofibrate and 23G minimally invasive vitrectomy for the treatment of DR can effectively correct the disorder of lipid metabolism, reduce the level of serum Lp-PLA2 and VEGF, so it is beneficial to improve the visual function and quality of life of the patients, but there is no effective data support for reducing the postoperative recurrence rate.