An objective evaluation of lens transparency after vitrectomy surgery with different intravitreal tamponades

Purpose To evaluate and compare the effects of different intraocular tamponade agents on lens density after vitrectomy. Methods The participating patients were divided into four groups according to the tamponade agent used: a sulfur hexafluoride (SF 6 ) group, a perfluoropropane (C 3 F 8 ) group, a silicone oil group, and a no tamponade group. Lens density measurements were performed preoperatively and two weeks, one month, and three months postoperatively using a Pentacam HR device with a Scheimpflug camera. The postoperative values were compared with the preoperative baseline values, also the values were compared between the four groups. Results The study included 82 eyes (82 patients). In the SF 6 group, lens density significantly increased in all zones two weeks and one and three months postoperatively (all P