METHODS: From January 2015 to January 2018, 66 eyes of 64 patients with PVR were treated in our hospital. All the patients were randomly divided into control group(32 cases, 34 eyes)and observation group(32 cases, 32 eyes). The control group was treated with routine vitreoretinal surgery. The observation group was treated with routine vitreoretinal surgery combined with intravitreal injection of conbercept. The clinical efficacy, operative duration, intraoperative bleeding, incidence of iatrogenic holes and the best corrected visual acuity(BCVA), subfoveal choroidal thickness before and after treatment were compared between the two groups.

RESULTS: After 3-6mo follow-up, the total effective rate in the observation group(94%)was significantly higher than that in the control group(74%), and the difference was statistically significant(P<0.05). The duration of operation in the observation group was significantly shorter than that in the control group, and the incidence of intraoperative hemorrhage and iatrogenic hiatus were significantly lower in the observation group than in the control group(P<0.05). Before treatment, there was no significant difference in serum VEGF level and bFGF content between the two groups(P>0.05). After treatment, the above indexes were lower than those before treatment. The levels of serum VEGF and bFGF in the observation group were significantly lower than those in the control group(P<0.05). Before treatment, there was no significant difference in the thickness of subfoveal choroid and BCVA between the two groups(P>0.05). The BCVA of the two groups was significantly higher than that before treatment. The thickness of subfoveal choroid in the observation group was significantly lower than that before surgery(P<0.05), and the thickness of the subfoveal choroid in the observation group was significantly lower than that in the control group(P<0.05).

CONCLUSION: Vitrectomy combined with intravitreal injection of conbercept in the treatment of PVR after choroidal detachment has a good effect. It can effectively shorten the operation time, reduce the incidence of intraoperative hemorrhage and iatrogenic hole, and reduce the level of serum VEGF and bFGF content. Improve the visual acuity and reduce the thickness of choroid.