What degree of anaesthesia is necessary for intraocular surgery? It depends on whether surgery is 'open' or 'closed'.

摘要

"Closed" intraocular surgery is characterised by some degree of pressurisation of the globe, positive intraocular pressure, during almost all of the procedure so the eye is not markedly hypo-tenous more than momentarily. In closed surgery characteristically, the incisions are self sealing or small and easily closed with suturing, and second, the eye is pressurised by an infusion line. Phacoemulsification and trans pars plana vitrectomy are typical forms of closed intraocular surgery.