Efficacy of vitrectomy for contusive vitreous hemorrhage caused by severe ocular contusion

Objective To investigate the clinical efficacy of vitrectomy for vitreous hemorrhage caused by severe ocular contusion.Methods Vitrectomy was performed on 76 eyes of 76 patients with vitreous hemorrhage caused by severe ocular trauma.The preoperative and postoperative conditions of patients were retrospectively analysed.Results In 76 eyes,the postoperative visual acuity was improved in 73 eyes.In 4 eyes with no light perception,after surgery the visual acuity was still no light perception in 1 eye,light perception in 2 eyes and 0.6 in 1 eye.In 22 cases with retinal detachment,the retina was reattached successfully in 21 eyes and the reattachment rate was 95.45％.In 28 eyes with traumatic lens dislocation,the intraocular lens were implanted after vitrectomy in 5 eyes.In 4 eyes with traumatic macular hole,vitrectomy combined with internal limiting membrane peeling was performed in 3 cases and the hole was closed after surgery.The internal limiting membrane was not peeled and the hole was not closed in 1 eye because of macular subretinal massive hematocele.This patient was treated by laser treatment around the hole to prevent retinal detachment.Conclusion Vitrectomy can be performed timely for vitreous hemorrhage caused by severe ocular contusion.For the eyes with vision of no light perception,if the ultrasound examination reveals lumps echo in vitreous and the retina and choroid structure can not be distinguished,the proper vitrectomy combined with other treatments should be performed after the vitreous organization has formed.After these treatments,most patients can be cured anatomically and some patients can be cured functionally. Key words: Contusion, ocular;  Hemorrhage, vitreous;  Vitrectomy