We demonstrate 35 cases of retinal detachment in which the patients received treatment with xenogeneie (poreine)sclera as pressor material. All the patients improved with retinal replacement after initial operation. There are 5 relapsing cases in which 4 patients were reoperated and the retinas were reattaehed in 2 cases. So far the total curative percentage was 91.4 in this series. After a period of three year follow-up ,none of the patient showed apparent postoperative complication of rejection reaction,discharge,exposure and infection. These findings suggest that porcine sclera has excellent characteristic,similar to human sclera ,and may be used in ophtha[mologic surgery as a substitute of homologous(human)sclera. （Chin J Ocul Fundus Dis,1994,10:207-209）
Objective To evaluate the curative effects of vitreoctomy or simple scleral buckling on retinal multiple-tear detachment associated with tracted anterior flap. Methods The clinical data of 89 eyes in 89 patients with retinal multiple-tear detachment associated with tracted anterior flap diagnosed in Jan, 1999-Jan, 2002 were retrospectively analyzed. In the 89 patients, 41 had undergone vitreoctomy and 48 had undergone scleral buckling without vitrectomy. In the duration of 2- to 36-month follow-up with the mean of (11.02±7.90) months, visual acuity, retinal reattached rate and postoperative complication were examined and the results in the 2 groups were compared. Results In 41 eyes underwent vitreocotmy, successful reattachment was found in 38 (92.7% ); visual acuity increased in 33 (80.5%), didn′t change in 6 (14.6%), and decreased in 2 (4.9%); leakage of flocculent membrane in anterior chamber occured was found in 2 (4.9%), complicated cataract in 3 (7.3%),and severe proliferative vitreoretinopathy (PVR) in 3 (7.3%). In 48 eyes underwent scleral buckling, 41 (85.4%) had success reattachment; visual acuity increased in 36 (75.0%), didn′t change in 4 (8.3%), and decreased in 8 (16.7%); leakage of flocculent membrane in anterior chamber was found in 6 (12.5%), complicated cataract in 9 (18.8 %), and severe PVR in 8 (16.7%). Conclusion There isn′t any difference of the success rate of the surgery between vitrectomy and scleral buckling for retinal multiple-tear detachment associated with tracted anterior flap.The better visual acuity and less complications are found in the vitrectomy gro up than those in the scleral buckling group. (Chin J Ocul Fundus Dis，2004，20：209-211)
Objectivｅ To investigate the histopathologic charact eristic of the vitreous herniation out of sclerotomy site during vitrectomy. Methods Twenty specimens of tissues herniated at vitrectomy site were collected. The paraffin sections or fresh smears were stained with hematoxylineosin and examined under light microscope. The specimens were collected from the affected eyes with rhegmatogenous retinal detachment (9 cases), traumatic retinal detachment (1 case), miscellaneous vitreous hemorrhage (6 cases) and intraocular foreign body (4 cases). Results The herniated tissues were found to be retina in 4 cases, ciliary tissue in 1 case, retina and ciliary tissue in 1 case, uvea in 1 case, and hyaloid tissue in 13 cases. Conclusion There were not only vitreous, ciliary epithelial cells and pigment containe depithelia, but also ciliary body, retina and uvea in the prolapsed tissues of sclerotomy site, which might be related to the occurence of some clinical complications. (Chin J Ocul Fundus Dis,2001,17:99-101)
ObjectiveTo observe the effect of segmental scleral buckling on the treatment of rhegmatogenous retinal detachment (RRD) with multiple retinal breaks. MethodsThis is a retrospective study. Seventeen patients (17 eyes) suffering from RRD with multiple retinal breaks were enrolled in this study. There were 8 eyes with the retinal breaks located in different quadrants and 9 eyes located in different latitudes within the same quadrant. Three were 3 eyes with 2 retinal breaks, 5 eyes with 3 retinal breaks, 9 eyes with more than 3 retinal breaks. The forms of retinal breaks included U-shaped break (4 eyes), tear break (1 eye), degenerative break (3 eyes) or U-shaped breaks combined with degenerative breaks (7 eyes), U-shaped breaks combined with tear breaks (1 eye), tear breaks combined with degenerative breaks (1 eye). The best corrected vision acuity (BCVA) was count finger to 0.8. The segmental scleral buckling was performed in all patients with the reasonable combination of silicon sponges and tires. The mean follow-up was 9.3 months (from 6 to 12 months). The BCVA, retinal attachment and complications were observed in the follow-up. ResultsFifteen eyes were reattached without recurrent of retinal detachment (88.2%). One eye with recurrent retinal detachment after 3 months due to proliferative vitreoretinopathy, and was partly reattached after vitrectomy combined with silicon oil tamponade. Retina remained detached in 2 eyes (11.8%), including 1 eye reattached after combined with gas tamponade, and 1 eye with vitrectomy. Sixteen eyes were completely reattached (94.1%), including 14 eyes were underwent only 1 operation (82.4%). The BCVA were improved more than 2 lines in 9 eyes (52.9%), 1 to 2 lines in 5 eyes (29.4%), and only 3 eyes (17.7%) without improvement. All patients have no serious complications during the operations. ConclusionFor certain patients suffering from RRD with multiple retinal breaks, a reasonable design of segmental scleral buckling can effectively increase the success rate of retinal reattachment (82.4%).