Comparison of surgical treatments for central XXXX ; RON vs. cannulation of @entity1456 into the retinal vein.

@entity1 @entity2194 @entity227 @entity2994 @entity4 @entity1456 @entity2297
PURPOSE: To compare the surgical outcomes and evaluate the effectiveness of two treatments for central @entity2994 : radial optic neurotomy (RON) and cannulation of @entity1456 (tPA) into the retinal vein (tPA). METHODS: This study consisted of 22 eyes. The inclusion criterion was a best-corrected visual acuity of < or =20/60 due to central @entity2994 . The exclusion criteria were previous treatment and the presence of @entity2194 . @entity1 were randomized into RON or tPA groups (n = 11 each). Best-corrected visual acuity, macular thickness, and complications were recorded. RESULTS: The mean best-corrected visual acuity changed from 16/200 at baseline to 20/167 at 12 months in RON (P = 0.217) and from 10/200 to 20/200 in tPA (P = 0.051). The preoperative macular thicknesses decreased from 1,059 microm to 406 microm 12 months postoperatively in RON (P < 0.001) and from 1,121 microm to 271 microm (P < 0.001) in tPA. @entity2297 developed in 2 eyes (18%) in RON and in 4 eyes (40%) in tPA. @entity227 associated with surgery were seen in 2 eyes (18%) in RON. CONCLUSION: There was no significant difference in surgical outcomes between the two procedures. Although best-corrected visual acuity and macular @entity4 improved, the incidence of @entity2297 was high. It is, therefore, still uncertain whether these treatments are effective.
