Modified Vitreous Surgery for Subretinal Neovascularization and Hemorrhage

Purpose:To modify vitreous surgery for subretinal neovascularization(SRNV)and to detrmine the effects of this operation.Methods:Six patients with SRNV were performed with this operation,The meth-ods of examination before and after operation included;testing the best-corrected visual acuity before operation and 1,3or6months after operation;30degrees and visual acuity before operation and 1,3or6months after operation;30degrees and macular 10degrees Humphrey visual field examination:FFA examination preop-eratively and 1,3or6months postoperatiely.Modified surgery procedureis;a preventive buckling;pars plana vitrectomy;peeling the vitreous cortical;no in-traocular diathermy;small retinotomy;subretinal surgery;air-fluid exchang.Results:SRNV was taken off in4cases.Subretinal hemorrhage was washed in2cases.After4to7months follow-up,the visual acuity was improved in 4cases,unchanged in 2cases.The visual field was improved in 4cases.unchanged in 1case,decraesed in 1case,The complications included macular hole due to surgery in lcase and subretinal hemorrage in 1case.Conclusion;The surgery criteria were:1)massive subretinal hemorrhage;2)some patients of SRN V included;FFA evidence they showed the membrane is beneath fovea,the bestV.Ais20/100orlower.and can‘t be treated by laser and the pa-tient consent.This modified subretinal operation is safe,and effective for massive hemorrhage and some SRNVS.

Modified Vitreous Surgery for Subretinal Neovascularization and Hemorrhage

To modify vitreous surgery for subretinal neovascularization (SRNV) and to determine the effects of this operation.Methods:Six patients with SRNV were performed with this operation. The methods of examination before and after operation included:testing the best-corrected visual acuity before operation and 1,3 or 6 months after operation; 30 degrees and macular 10 degrees Humphrey visual field examination ;FF A examination preop-eratively and 1, 3 or 6 months postoperatively. Modified surgery procedure is : a preventive buckling; pars plana vitrectomy; peeling the vitreous cortical; no intraocular diathermy;small retinotomy;subretinal surgery;air-fluid exchange. Results: SRNV was taken off in 4 cases. Subretinal hemorrhage was washed in 2 cases. After 4 to 7 months follow-up,the visual acuity was improved in 4 cases, unchanged in 2 cases. The visual field was improved in 4 cases, unchanged in 1 case,decraesed in 1 case. The complications included macular hole due to surgery in 1 case and subretinal hrage in 1 case.Conclusion: The surgery criteria were: 1)massive subretinal hemorrhage;2)some patients of SRNV included -FFA evidence they showed the membrane is beneath fovea,the best V. A is 20/100 or lower,and can't be treated by laser and the patient consent. This modified subretinal operation is safe,and effective for massive hemorrhage and some SRNVS. Eye Science 1995; 11:26-28.