Objective To observe the effect of amniotic homogenate on closing holes in experimental rhegmatogenous retinal detachment and investigate its mechanism. Methods Forty rabbits were randomly divided into group A, B, C and D with 10 rabbits in each group. Group A and C were the treatment groups, and group B and D were the control groups. All eyes of rabbits underwent pars plana vitrectomy, retinectomy, and fluidair exchange. The surface of the breaks was treated with 01 ml amniotic homogenate in experimental groups and 0.1 ml PBS in control groups. At the end of operation, 20% SF6 was tamponaded and the retina reattaced. The animals were executed 14 (group A and B) and 28 days (group C and D) after the surgery. The tissue sections were observed by light microscope, electron microscope and immunocytochemistry method. Results Fourteen days after the surgery, the retina reattached in 6 eyes in group A (60%) and 2 eyes in group B (20%) （P=0.021）. Twenty-eight days after the surgery, the retina reattached in 8 eyes in group C (80%) and 3 eyes in group D (30%) (P=0.046). The difference of the rate of retinal reattachment among the 4 groups were statistical significant (Plt;0.05). Light postoperative inflammation of ocular anterior segment was observed, which was controlled 3-5 days after treated with topical steroids. The result of light microscopy showed that the eyes in treatment groups had multilayer of fibroblastlike cells around the retinal breaks, adhering to the choroid and retinal pigment epithelial cells. The proliferative cells around the retinal breaks obvious less in control groups than that in the treatment groups, and the retina could not adhere to the choroid. The results of electron microscopy were the same as that of light microscopy. Immunohistochemistry staining of the fibroblastlike cells revealed positve glial fibrillary acidic protein, which suggested that the proliferative cells around the retinal breaks were retinal glial cells. Conclusions Amniotic homogenate helps to seal retinal breaks and promote retinal reattachment by stimulating the proliferation of retinal glial cells around the breaks.
Objective To observe the clinical effects of surgical treatment of retinal detachment(RD) caused by macular hole(MH) in high myopia. Methods The clinical materials of 149 eyes of 149 high myopia patients with RD caused by MH were reviewed. The cases were divided into complete posterior vitreous detachment (PVD) group and incomplete PVD group. The anatomic successful rate of operative treatment was evaluated according to the applications of vitrectomy surgery and non-vitrectomy surgery respectively in each group. The visual acuity changes after the operations were also observed.Results The anatomic successful rates were as follow: 77.9% in total cases with vitrectomy surgery and 25.9% with non-vitrectomy surgery (P＜0.001); 75.5% in cases of incomplete PVD with vitrectomy surgery,and 15.0% with non-vitrectomy surgery (P＜0.001); and in non-vitrectomy cases, 57.1 % in complete PVD group and 15.0% in incomplete PVD group (P=0.05). The rates of visual improvement were 68.6% in complete PVD group and 57.0% in incomplete group (P＞0.05). Conclusions The scleral buckling combined with vitrectomy, gas intraocular tamponade and postoperative photocoagulation is an effective and optimal procedure for RD caused by MH in high myopia. (Chin J Ocul Fundus Dis，2003，19：8-10)
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)
ObjectiveTo analyze and discuss the clinical features and management of pediatric retinal detachment (RD) associated with morning glory syndrome (MGS). MethodsThe clinical data of 49 patients (51 eyes) with RD associated with MGS were retrospectively analyzed, including 27 males (27 eyes) and 22 females (24 eyes). The age at first diagnosis ranged from 1 week after birth and 13 years old (4.2±3.2) years. There were 33 eyes of exudative RD, 3 eyes of rhegmatogenous RD and 15 eyes of RD with undetermined cause. Twenty eyes of 20 patients had other congenital ocular abnormalities, including persistent hyperplastic primary vitreous, microphthalmia, choroidal coloboma, iris coloboma. Besides retinal detachment, other complications were found, including cataract, secondary glaucoma,corneal leukoma or edema, strabismus and nystagmus. Twenty-two cases (22 eyes) received treatment. Five cases of mild exudative retinal detachment took oral methazolamide tablets. Three eyes with mild and restricted retinal detachments got retinal laser photocoagulation around the optic disc. Fourteen cases of 14 eyes underwent surgery including vitrectomy, lensectomy, and phacoemulsification. Follow-up after treatment were three months or more, with an average of (20.3±11.8) months. The visual acuity, retinal reattachment and intraocular pressure and other complications after treatment were followed up. ResultsFive patients of exudative retinal detachment were remained stable by taking methazolamide tablets. Two of the 3 eyes remained stable after laser therapy; however, the remaining one eye was not controlled after relaser. Cataract and glaucoma were resolved by lensectomy in 7 eyes and phaco-emulsification surgery in 1 eye. Retina was re-attached in 6 eyes after vitrectomy. Among those treated, 10 eyes had records of visual acuity. Visual acuity was improved in 1 eye after laser therapy and remained stable in 9 eyes. There were no drugs and surgery-related complications. ConclusionsRetinal detachment was the main complication of MGS. The high incidence and poor prognosis call for the need of close follow-up and timely treatment, including medicine, laser and surgery.
Objective To approach the clinical characters and therapeutic methods of retinal detachment(RD) after extracapsular catarat extraction(ECCE)with posterior chamber intraocular lens(PCIOL). Methods Sixty eight cases(68 eyes) of RD after ECCE with PCIOL were treated with sclerel buckling,microvitreo retinal surgery and intraocular gas,silicone oil injection and were reviewed. Results The retinas were totally reattached in 65 eyes(95.59%) which dropped to 94.12% in 6-60 months postoperatively.The resultant rate of visual acuity of the eyes with 0.1 or better was 79.41%,with 0.3 or better was 26.47%. Conclusion The main causes of RD after ECCE with PCIOL are similar to those of general RD,and most cases of RD after ECCE with PCIOL can be cured by surgical treatment. (Chin J Ocul Fundus Dis,1998,14:167-169)
Morning glory syndrome (MGS) is a congenital optic disc anomaly. The characteristic ophthalmoscopic findings consist of a generally enlarged, funnel-shaped and excavated optic disc, surrounded by an elevated annulus of chorioretinal pigment disturbance, with a central glial tuft, multiple narrow branches of retina vessels radiating from the disc. There are peripheral non-perfusion retinal areas in most cases. The pathogenesis of MGS remains unclear. MGS might be associated with many ocular and systemic abnormalities, involving facial, central nervous, cerebrovascular and endocrine systems. Persistent hyperplastic primary vitreous and retinal detachments (RD) are the most common ocular complications of MGS. The mechanism RD in MGS is unclear. Vitrectomy with long-acting gas or silicone tamponade and photocoagulation around the breaks or the enlarged disc might be efficient for rhegmatogenous RD of MGS. Early diagnosis is crucial for recognition and treatment of the ocular and systemic complications, and maintenance of the visual function.
Objective To discuss the treatment of retinal detachment(RD) after posterior chamber intraocular lents(PCIOL) implantation. Methods Twenty eyes with RD after PCIOL inplantation which were treated with vitrectomy combined with scleral buckling and intraocular tamponade from March 1993 to June 1997 in this institute were analysed retrospctively. Results The retinas reattached completely in 16 eyes and partly in 2 eyes after RD operation.The postoperative visual acuity improved in 17 eyes,not improved in 2 eyes,and decreasde in 1 eyes.The PCIOL was taken off during RD operative in 6 eyes.Postoperative complications including displacement of the PCIOL in 2 eyes,hyphema and vitreous hemorrhage were found in this series of RD operation in 1 eyes. Conclusion Vitrectomy combined with scleral buckling and intraocular tamponade is one of the effective methods to treat the eyes with RD with PCIOL. (Chin J Ocul Fundus Dis,1998,14:165-166)