PURPOSE: To evaluate the percentage of agreement between the findings of the ophthalmic ultrasonography in preoperative cases with vitreous opacities and the intraoperative findings in pars plana vitrectomy. METHODS: In a prospective study, 21 eyes with previous indication for pars plana vitrectomy underwent A- and B-scan ophthalmic ultrasonography by an experienced ultrasonographer and were graded into groups according to the findings. The accuracy of preoperative ultrasonography was determined by the agreement between the preoperative findings and those observed during surgery. RESULTS: The most frequent indication for vitrectomy was hemorrhage secondary to proliferative diabetic retinopathy (16 eyes). The overall accuracy of ultrasound examination in determining the retinal status in these cases was 80%. The agreement was more precise for the cases of isolated vitreous opacity and total retinal detachment. The best visual prognosis was observed in the group with only vitreous hemorrhage and no vitreous or retinal detachment. CONCLUSIONS: Ophthalmic ultrasonography has good accuracy in demonstrating structural changes in the vitreous body and retina.
Ultrasonography; Vitrectomy; Vitreous body; Vitreous body; Retina; Retina; Technology reliability; Preoperative care; Prospective studies
