visual outcomes of 4 therapeutic approaches for central retinal vein occlusion

purpose: to compare the visual outcomes of four different therapeutic modalities for central retinal vein occlusion (crvo) with each other and with the natural course of the disease. methods: this study was conducted on 63 eyes of 63 patients including 13 eyes in the radial optic neurotomy (ron) group, 10 eyes in the combined ron and intraocular triamcinolone injection (ron/ iot) group, 12 eyes in the combined internal limiting membrane peeling, ron and iot (ilmp/ ron/iot) group, 14 eyes in the intravitreal triamcinolone injection (ivt) group and 14 untreated control eyes. all patients were followed for six months. results: final best-corrected visual acuity (bcva) was better in the ivt group as compared to the ron (p=0.037), ron/iot (p=0.401), ilmp/ron/iot (p=0.023) and control (p=0.025) groups. however, after adjusting final bcva for baseline bcva, only the ron/iot group showed significant visual improvement after 1 (p= 0.025), 3 (p= 0.023) and 6 (p= 0.054) months as compared to controls. conclusions: among the four different approaches evaluated in this study, ron/iot may entail better visual outcomes in the management of crvo within six months