AIM:To study the clinical efficacy of phase Ⅱ minimally invasive vitreous surgery in different stages in treatment of open ocular trauma with retinal detachment.

METHODS: A retrospective analysis was performed on 41 patients(41 eyes)with open eye trauma combined with retinal detachment from December 2013 to June 2018 in the Ophthalmology Department of Xiaolan People's Hospital of Zhongshan. According to the opportunity of phase Ⅱ vitrectomy, 41 eyes were divided into two groups: 24 eyes in the early group(6d after injury)and 17 eyes in the conventional group(7-14d after injury). Postoperative follow-up with 6mo as the time point, the retinal reattachment rate, TPVR incidence, visual acuity and complications were compared between the two groups.

RESULTS: The retinal reduction rate was 92% in the early group and 76% in the conventional group, and the difference was not statistically significant, there was no statistical difference(P=0.692)in retinal reduction rate between the two groups. The incidence of TPVR in the early group was lower than that in the conventional group(P=0.014). The improvement of postoperative visual acuity in early group was better than the conventional group(U=119.5, P=0.0018). There was no significant difference in complications between the two groups.

CONCLUSION: Open ocular trauma patients with retinal detachment have better prognosis after phase Ⅱ vitrectomy within 6d after injury than 7-14d.