The position and duration of posture depends on the indication for the vitrectomy:
The level of pain will depend on the type of operation performed. Vitrectomy for an epiretinal membrane will obviously be less painful than a scleral buckle. It is recommended that a supplemental peribulbar or subtenons block be administered to patients who undergo general anaesthesia, unless there is a contraindication such as a ruptured globe. Pain greater than that manageable with oral analgesics requires prompt ophthalmic evaluation. In particular, the intraocular pressure (IOP) must be checked.
Typical post-operative drops include:
Some surgeons prefer to use a combined antibiotic / steroid (e.g. tobramycin and dexamethasone) if available. The antibiotic and cycloplegic can usually be stopped after 1 week, but topical steroid should be continued for 1 month. An IOP-lowering agent can be prescribed if intravitreal gas has been injected and there is concern over elevated IOP, or if a steroid response is seen after 1 week.
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Westmead Eye Manual
This invaluable open-source textbook for eye care professionals summarises the steps ophthalmologists need to perform when examining a patient.