Objective To investigate the effect of prophylactic 360°laser retinopexy on retinal redetachment after silicone oil removal. Methods The clinical data of 181 vitreoretinal patients after silicone oil removal were retrospectively analyzed. In 88 patients (photocoagulation group) was taken prophylactic 360-degree laser retinopexy before silicone oil removal; in 93 patients (control group) without prophylactic laser retinopexy. The incidence, time, the cause of retinal redetachment and the complications of laser retinopexy after silicone oil removal in two groups were observed. Results The duration of silicone oil tamponade is 4~72 weeks, averaging 13.7±2.4 weeks. 20 cases of retinal redetachment were recorded after silicone oil removal, including 5 cases (5.7%) in photocoagulation group and 15 cases (16.1%) in control group. The difference between two groups is statistically significant (Plt;0.05). Among these 20 patients with retinal redetachment, 10 occured during the first 3 days after the operation, 6 during 4~7 days, 3 during 8~14 days. 1 case occured 2 months after the operation. 11 cases of redetachment result from the omission of small retinal breaks located in ora serrata or behind the photocoagulation zone, or the reopening of primary retinal breaks because of insufficient photocoagulation and freezing during the operation. 1 case result from the hole that come from laser photocoagulation scar tracted by nearby proliferative tissue. 7 cases result from the formation of new breaks from the proliferative vitreoretinopathy(PVR) or proliferation of residual vitreous. There are 52 cases of burning of pupillary border, with the incidence of 59%. Conclusions Prophylactic 360-degree laser retinopexy is associated with a decrease of the incidence of retinal redetachment after removal of silicone oil. （Chin J Ocul Fundus Dis，2008，24：283-285）
Objective To invesligate the treatment of retinal de tachment(RD) after silicone oil tamponades(SOT)． Methods The records of a consecutive series of 32 eyes with redetachment of retina after SOT surgery between 1998 to 2000 were reviewed retrospectively． The surgical techniques used for these cases included remove of silicon oil,peeling of preretinal membrane, retinotomy, endolaser photocoagutation, secondary vitrectomy and C3 F8 tamponades． Results In 28 of 32 eyes the retina was reattached (87．6%)． The postoperative visual acuity was improved in 12 eyes, redused in 4 eyes and remained no change in 16 eyes． The postop erative complications in 6 eyes included secondary glaucoma(3 eyes), hypotony (1 eye) and hyphema (2 eyes)． Conclusion The techniques of preretinal membrane peeling, retinotomy, endophotocoagulation and C3 F8 tamponades can be effectively used in combination to treat the redetachment of retina after the silicone oil tamponades surgery． (Chin J Ocul Fundus Dis,2001,17:214-215)
Objective To evaluate glaucoma and anterior chamber angle changes after intravitreal silicone oil injection(SOI). Methods The intraocular pressure(IOP) and anterior chamber angles of 34 e yes(33 patients)undergone pars plana vitrectomy and SOI were observed. Results Glaucoma occurred in 9 eyes(26%),in which silicone oil glaucoma(SOG) accounted for 77%(7/9).The changes of the superior part of anterior chamber angle were peripheral anterior synechiae in 11 eye(32%) and SO emulsification droplets in 22 eyes(64%) in 1～4.5 months after surgeries.Glaucoma occurred in 6 eyes of 7 eyes undergone peripheral iridectomy at the inferio r part of the iris after the closure of iridectomy holes (plt;0.05). Conclusion High incidence of glaucoma was found in this series of patients after intravitreal silicone oil injection,and the main causes of SOG were closure of the inferior iridecomy hole and silicone emulsification. (Chin J Ocul Fundus Dis, 2001,17:105-107)
Objective To investigate the characteristics and risk factors of optic nerve atrophy in eyes with complicated retinal detachment after silicone oil tamponade during the procedure of vitreoretinal operation. Methods The clinical data of 97 patients with complicated retinal detachment who had optic nerve atrophy after silicone oil tamponade during the procedure of vitreoretinal operation were an alyzed retrospectively. Logistic regression analysis by SPSS statistical software was used to analyze the factors like age, disease history, primary diseases, preoperative ocular condition, complications in and after the operation, the time taking out the silicone oil, and emulsification of the silicone oil, and Ple;0.05 was considered to be the symbol of significant difference. Results All of the affected eyes had optic discs with clear border, including paler optic disc in 65 eyes, pale one in 21 eyes, and paler optic disc with enlargement of the cup/disc (ge; 0.6) in 11 eyes. The result of logistic regression analysis showed that the intraocular pressure (P=0.022) and the visual acuity (P=0.001) during the silicone oil removal were in the equation. Conclusion The risk factor of optic nerve atrophy is the chronic increase of intraocular pressure after silicone oil tamponade. (Chin J Ocul Fundus Dis, 2006, 22: 305-307)