Treatments of Macular Edema Associated with Ischemic Central Retinal Vein Occlusion - Photocoagulation, Vitrectomy or Radial Optic Neurotomy

Abstract

Abstract: : Purpose:To compare photocoagulation, vitrectomy and radial optic neurotomy for the treatment of macular edema associated with ischemic type of central retinal vein occlusion (CRVO). Methods:Nineteen, 41 and 10 patients with macular edema associated with CRVO (ischemic type) were treated with pan retinal photocoagulation (PHC), single vitrectomy (VIT) and vitrectomy with radial optic neurotomy (RON), respectively. Vitrectomy cases were added with panretinal photocoagulation. Cases were followed in terms of visual acuity, funduscopic findings, fluorescein angiography and optical coherence tomography. Results:The geometric means of the preoperative and the best postoperative visions of PHC, VIT and RON were 0.074 and 0.140, 0.051 and 0.102, and 0.049 and 0.071, respectively. The difference of the pre- and postoperative values of PHC and VIT showed statistical significance (paired t-test). The average postoperative visual acuity of PHC and VIT attained the best after 8.2 ± 8.8 and 38.9 months, respectively. Conclusions:The visual prognosis of all cases was poor. The simple vitrectomy seemed to be effective in recovering the macular function of ischemic CRVO, while RON does not seemed to have any special effects, though the patient number and follow-up period were not satisfactory.

Keywords: vascular occlusion/vascular occlusive disease • vitreoretinal surgery • clinical (human) or epidemiologic studies: out