ObjectiveTo observe the clinical effect of radial optic neurotomy (RON) for central retinal vein occlusion (CRVO).MethodsThe clinical data of 5 patients with CRVO who had undergone RON after a standard three-port vitrectomy were analyzed retrospectively. In the 5 patents, CRVO was diagnosed in 2 before the surgery, and the examination of visual acuity, fundus photography, fundus fluorescein angiography (FFA), color doppler imaging (CDI), and examination of perimeter and optic coherence tomography (OCT) were performed on them before and after the operations, respectively. Three patients underwent the operation because of the vitreous hemorrhage and CRVO was diagnosed during the surgery. All of the 5 patients suffered from severe macular edema. The results of post-operative visual acuities, fundus examination, fundus photography and OCT were compared with those of the pre-operative ones. The follow-up after the surgery was 12 months. ResultsThe visual acuities improved in 4 patients and decreased in 1. The results of fundus photography and (or) FFA, and OCT revealed that the macular edema was evidently alleviated 1 month after the surgery and the retinal hemorrhage was absorbed ultimately 2 months after the surgery. The result of examination of perimeter performed on 1 case showed the improvement of visual field. In addition, vitreous hemorrhage occurred in 1 patient postoperatively and hemorrhage occurred in 2 in the operation puncturing the optic disk.ConclusionsRON is helpful to ameliorate the macular edema, reduce the retinal hemorrhages, prevent the neovascularization and enhance the visual acuity to some extent, which maybe clinically feasible and valuable in treating CRVO，but more prospective, randomized, and multi-center researches are still needed to verify the efficacy.(Chin J Ocul Fundus Dis, 2005,21:6-9)
ObjectiveTo observe the characteristics of images of optic coherence tomography (OCT) for the macular region of congenital retinoschisis and investigate its significance.MethodsThe data of OCT of 11 patients (20 eyes) with congenital macular retinoschisis diagnosed by direct or preplacedmirror ophthalmoscopy, fundus fluorescein angiography (FFA), and electroretinography (ERG) were retrospectively analyzed.ResultsThe images of OCT showed split in the mid portion of sensory retina at the macula in all eyes. The retina of fovea centralis was divided by the split into two slightly thickening layers. In addition, in a few number of cases, the parafoveal sensory retina which became much thickening with 2 splits, was divided into 3 layers.ConclusionThe characteristic of images of OCT in macular congenital retinoschisis is the split cavity at the middle layer of the retina, and OCT has a high sensitivity in the diagnosis of congenital retinoschisis. (Chin J Ocul Fundus Dis, 2005,21:93-96)