Laser-Induced Chorioretinal Venous Anastomosis for Nonischemic Central or Branch Retinal Vein Occlusion

Intravitreal triamcinolone acetonide for macular oedema owing to retinal vein occlusion

“…The prognosis in CRVO and HRVO is generally poor with irreversible severe visual loss from chronic macular oedema and retinal ischaemia in the majority of patients. 9 Treatment for CRVO has included bypassing the occluded vein with a chorioretinal venous anastomosis (created surgically 10 or by laser 11 ) and more recently surgical treatment with radial optic neurotomy 12 has been attempted. Despite these approaches, there is no well-established, effective treatment for macular oedema owing to CRVO and it remains a condition with a poor prognosis.…”

Laser-induced chorioretinal venous anastomosis using combined lasers with different wavelengths

“…The anastomosis can be induced by a high-intensity argon laser, dye yellow laser, or a combination of two lasers (argon laser and Nd-YAG laser). 1,2,3 The anastomosis also could form naturally after penetrating ocular injury. 8 Generally speaking, the anastomosis formation usually followed an injury that involved both the retina and the choroid.…”

“…At first, we used two lasers in group 1, the success rate of anastomosis formation was similar to that reported in the literature (33-54%) using the original technique. 1,2 In order to increase the success rate of anastomosis formation, we started to use three lasers in group 2 since 2000 February. The success rate of anastomosis formation in group 2 was higher.…”

“…1,2 A high-intensity argon laser was applied to a vein and underlying or adjacent Bruch's membrane, sometimes combined with an Nd:YAG laser, to induce the anastomosis formation. But there were two problems that limited its use in the clinic: (1) the success rate of anastomosis formation was relatively low (33-54%) and (2) it was sometimes associated with serious complications. The most serious complications associated with the treatment were choroidovitreal neovascularization that may lead to vitreous haemorrhage and traction retinal detachment.…”

“…The most serious complications associated with the treatment were choroidovitreal neovascularization that may lead to vitreous haemorrhage and traction retinal detachment. [1][2][3][4][5][6] We describe the treatment results using combined lasers with different wavelengths to induce CRVA in 85 eyes of 85 consecutive patients with nonischaemic central retinal vein occlusion (CRVO).…”