Photocoagulation in retinal vein thrombosis

Oosterhuis, J. A.; Sedney, S.C.

doi:10.1016/0014-4835(73)90262-5

Cited by 4 publications

(3 citation statements)

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“…It is therefore reasonable to assume that similar results can be achieved in retinal vein occlusion, where macular oedema and new vessel formation are common complications. There are several reports indicating 'good results ' (Zweng et al, 1974;Theodossiadis et al, 1974;Freyler and Nichorlis, 1974;Wetzig and Thatcher, 1974;Oosterhuis and Sedney, 1975;Sedney, 1976), but none of these was a randomised controlled clinical study. In order to determine the exact place of photocoagulation in the treatment of central retinal vein occlusion (CRVO) a randomised controlled trial was carried out at Moorfields Eye Hospital during 1975-7.…”

mentioning

confidence: 99%

Panretinal photocoagulation in central retinal vein occlusion: A randomised controlled clinical study.

Laatikainen¹,

Kohner²,

Khoury³

et al. 1977

British Journal of Ophthalmology

123

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SUMMARY A randomised controlled study of photocoagulation compared with no treatment in central retinal vein occlusion is reported. Forty-eight patients were allocated into treated and control groups by a random procedure 3 months after their first visual symptoms. For the analysis they were subdivided into (1) ischaemic type, and (2) hyperpermeability-response macular-oedema type of central retinal vein occlusion.In neither group did treatment confer benefit as far as visual acuity was concerned. However, iris, disc, and retinal neovascularisation improved after treatment in the ischaemic group. In addition none of the treated patients progressed to neovascular glaucoma. Macular-oedema improved in treated patients with the hyperpermeability response, but the visual field was affected and atrophic changes at the macula precluded visual improvement.It is concluded that photocoagulation should be used only to prevent complications in the ischaemic type of central retinal vein occlusion. It does not appear to be of value in the hyperpermeability group.Photocoagulation has been shown to be effective in the treatment of both macular oedema and neovascularisation in diabetic retinopathy. It is therefore reasonable to assume that similar results can be achieved in retinal vein occlusion, where macular oedema and new vessel formation are common complications. There are several reports indicating 'good results' (Zweng et al., 1974;Theodossiadis et al., 1974;Freyler and Nichorlis, 1974;Wetzig and Thatcher, 1974;Oosterhuis and Sedney, 1975;Sedney, 1976) 3 months after initial visual symptoms. At the 3-month examination patients whose visual acuity was 6/24 or worse entered the study provided they did not have neovascular glaucoma or other eye disease affecting vision and precluding treatment, and provided they agreed to randomisation.Randomisation was by the use of pre-prepared sealed envelopes which indicated whether an eye was for treatment by photocoagulation or remained untreated, i.e., control. No other therapy for vein occlusion was given to any of the patients, but glaucoma and medical conditions were treated as required. There were 24 treated and 24 control patients. The mean age of the patients was 62 years (range 44-79 years) in the treated and 61 6 years (range 36-79 years) in the untreated group.The patients were followed up for at least 1 year after entering the trial whenever possible. Five patients were not followed up for the required time. Two died, 4 and 10 months after entering the trial, 1 left the country, and 2 defaulted from follow-up.During the course of the study the initial scheme was slightly modified so that eyes with considerable capillary closure were entered into the trial as soon as the first fluorescein angiogram became available, i.e., before 3 months expired.Prior to analysis patients were subdivided into two subgroups according to the main cause of visual loss as revealed by fluorescein angiography. The 741

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confidence: 99%

Panretinal photocoagulation in central retinal vein occlusion: A randomised controlled clinical study.

Laatikainen¹,

Kohner²,

Khoury³

et al. 1977

British Journal of Ophthalmology

123

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“…Promising results have also been reported with the use of photocoagulation in branch vein occlusion and central retinal vein occlusion (Krill et al, 1971;Campbell and Wise, 1973;Gitter et al, 1975). The most significant effect noted thus far in retrospective nonrandomised studies of panretinal photocoagulation for central retinal vein occlusion has been the prevention or elimination of rubeosis iridis and subsequent neovascular glaucoma (Krill et al, 1971;Francois et al, 1974;Freyler and Nichorlis, 1974;Theodossiadis et al, 1974;Wetzig and Thatcher, 1974;Zweng et al, 1974;Oosterhuis and Sedney, 1975;Callahan and Hilton, 1974;Fetkenhour et al, 1975;Little et al, 1976;Sedney, 1976).…”

mentioning

confidence: 98%

Xenon arc panretinal photocoagulation for central retinal vein occlusion: a randomised prospective study.

May¹,

Klein²,

Peyman³

et al. 1979

British Journal of Ophthalmology

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SUMMARY Thirty-three patients with central retinal vein occlusion were evaluated for the effects of scatter xenon arc panretinal photocoagulation. Thirty-four eyes (2 eyes of 1 patient) were randomly divided into a treatment (15 eyes) and a nontreatment group (19 eyes). The average follow-up per eye has been 29 months. The visual prognosis was not significantly better in either group. There was no difference in the development of fundus neovascularisation between groups. None of the patients in the treated group developed rubeosis or neovascular glaucoma. Two patients in the nontreatment group initially had rubeosis and 3 developed it after entry. All 5 involved eyes developed neovascular glaucoma. A significantly greater amount of central retinal capillary drop-out was present in the untreated eyes that developed rubeosis than those untreated eyes which did not. The eyes in the treated group had a similar range of capillary drop-out area, but none of these eyes developed rubeosis or neovascular glaucoma. Panretinal photocoagulation prevented the development of rubeosis and neovascular glaucoma in susceptible eyes.

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“…Unbehandelt entwickeln 35 bis 60% der Patienten mit ischämischem Typ eines Zentralvenenverschlusses eine Rubeosis iridis haufig innerhaib von em bis drei Monaten (1,2, 5,10, Ii,17,21,23). In der Literatur ist der therapeutische Effekt der Lasertherapie bei Patienten mit ischdmischen Zentralvenenverschlhssen zur Verhinderung und Behandlung der Rubeosis indis belegt (6,12,13,20). …”

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Ergebnisse der Laserkoagulation retinaler Zentralvenenverschlüsse

Lang

1993

Klin Monatsbl Augenheilkd

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Photocoagulation in retinal vein thrombosis

Cited by 4 publications

References 0 publications

Panretinal photocoagulation in central retinal vein occlusion: A randomised controlled clinical study.

Panretinal photocoagulation in central retinal vein occlusion: A randomised controlled clinical study.

Xenon arc panretinal photocoagulation for central retinal vein occlusion: a randomised prospective study.

Ergebnisse der Laserkoagulation retinaler Zentralvenenverschlüsse

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