Craniectomy with membranectomy
and single or double-"Burr hole" drainage are the surgical procedures used in the treatment of SDH (1,5).
For many years, the treatment of choice for symptomatic ERMs had been pars plana vitrectomy (PPV) with membranectomy .
The patients were classified into two groups depending on whether they underwent ILM peeling: ILM peeling (P) group with PPV plus epiretinal membranectomy plus ILM peeling and non-ILM peeling (NP) group with PPV plus epiretinal membranectomy.
In the NP group, ICG dye solution was injected over the macula region after epiretinal membranectomy to ensure that ILM remained intact.
Rocchi G, Caroli E, Salvati M, Delfini R: Membranectomy
in organized chronic subdural hematomas: indications and technical notes.
In patients with significant posterior capsule opacification, Nd-YAG laser capsulotomy was done in 7 (17.5%) and membranectomy in 1 (2.5%).
In the present study 30% had clinically significant PCO, Nd-YAG laser capsulotomy was performed in 17.5% of cases and one (2.5%) patient had very thick PCO which was resistant for Laser; in this patient surgical membranectomy was done at an interval of 4 months after surgery which matches with study of Eckstein M et al  in which Nd-YAG laser capsulotomy was performed in 63.46%, more than one laser session required in 11.53% and surgical membranectomy was done in 17.3%.
(8) SOR through the pars plana also allows adequate examination of the retina during procedures like epiretinal membrane peeling, endolaser application, membranectomy
and posterior capsulotomy.
The revision surgeries undertaken were silicone tube intubation after granuloma removal, synechiolysis and membranectomy
using Nd: YAG laser and trephination of canalicular obstruction, and endonasal conjunctivo-dacryo-cysto-rhinostomy (CDCR) for the parts of functional block and the canalicular obstruction.