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Br J Ophthalmol 2003;87:1043-1044 doi:10.1136/bjo.87.8.1043
  • Letter

Laser induced chorioretinal venous anastomosis in ischaemic central retinal vein occlusion

  1. A K H Kwok1,2,
  2. V Y W Lee2,
  3. T Y Y Lai2,
  4. C Hon3
  1. 1Department of Ophthalmology, Hong Kong, Sanatorium and Hospital, Hong Kong, People’s Republic of China
  2. 2Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong Eye Hospital, Hong Kong, People’s Republic of China
  3. 3Department of Ophthalmology, Queen Mary Hospital, Hong Kong, People’s Republic of China
  1. Correspondence to: Dr Alvin K H Kwok, Department of Ophthalmology, Hong Kong Sanatorium and Hospital, 2 Village Road, Happy Valley, Hong Kong; alvinkwok{at}hksh.com
  • Accepted 1 December 2002

Laser induced chorioretinal venous anastomosis (CRVA) has been advocated by McAllister and Constable as a treatment for non-ischaemic central retinal vein occlusion (CRVO).1 This technique potentially offers a means of permanently bypassing the site of obstruction to venous outflow, which is thought to occur in the region of the lamina cribrosa. In ischaemic CRVO, the visual prognosis is usually much poorer, with devastating complications like neovascular glaucoma and progressive macular ischaemia.2 In this prospective study, we investigated the feasibility of laser induced CRVA in eyes with ischaemic CRVO, in view of the possibility of avoiding or lessening these severe complications.

Materials and methods

The classification of ischaemic CRVO was based on the presence of 10 disc diameter or more of capillary non-perfusion in the fundus fluorescence angiography …

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