Blue field entoptoscopy in the preoperative evaluation of vitrectomy candidates

Twenty-four patients with vitreous hemorrhage scheduled for pars plana vitrectomy were evaluated with the blue field entoptoscope. Correlation of pre- and postoperative findings in patients with and without macular pathology was highly irregular, apparently due to mechanical obstruction of light transmission by the vitreous hemorrhage. Blue field entoptoscopy is therefore not recommended as a tool in the preoperative evaluation of vitrectomy patients.