[Drainage of subretinal fluid: technic and results]

The drainage of subretinal fluid (S.R.F.) after choroidal diathermy offers a distinct advantage: important reduction of massive haemorrhages from the drainage site (4% vs 48% in the non diathermy group in our series). According to us it is not a decisive factor for the anatomical prognosis because complications of drainage in themselves seem to be a quite infrequent cause of anatomical failure. On the other hand we think that visual outcome is better in the diathermy group because of a diminution of macular haemorrhages.