Ophthalmic Anesthesia Techniques and Patient Outcomes

Ophthalmic surgery encompasses a spectrum of procedures from cataract extraction to vitreoretinal interventions, each demanding precise anaesthetic management to ensure patient comfort, surgical immobility and rapid recovery. Techniques range from topical anaesthesia applied directly to the ocular surface, through peripheral nerve blocks such as retrobulbar and peribulbar injections, to sub-Tenon administration via a blunt cannula. Choice of method reflects a balance between efficacy in pain control and akinesia, avoidance of sight- or life-threatening complications, and operational efficiency, particularly in high-volume or ambulatory settings. Outcomes are routinely measured by pain scores, incidence of adverse events (for example chemosis, haemorrhage or brainstem anaesthesia), patient satisfaction and surgeon-rated feasibility. Recent practice has trended towards minimally invasive approaches with reduced need for systemic sedation or presence of an anaesthesiologist, thereby optimising resource allocation while maintaining high standards of safety and patient-centred care.

Research from Nature Portfolio

Recent studies in an ambulatory cataract surgery centre have demonstrated that cataract removal under purely topical anaesthesia—without fasting requirements, peripheral venous access or dedicated perioperative anaesthesia care—can be performed safely in selected patients. Monitoring was limited to pulse oximetry, and no serious medical emergencies or unplanned admissions occurred in over 600 consecutive cases. Intraoperative adverse events remained below 5%, and overall patient satisfaction scored very highly, supporting a model in which anaesthetic resources are focused on more complex procedures while routine cases proceed under streamlined protocols.

Ophthalmic Anesthesia Techniques and Patient Outcomes publication trend

The graph below shows the total number of articles in ophthalmic anesthesia techniques and patient outcomes across all publications each year (not limited to Nature Index journals).

Technical terms

Topical anaesthesia: Application of local anaesthetic agents directly to the ocular surface to numb the cornea and conjunctiva without injection.

Retrobulbar block: Injection of anaesthetic within the muscle cone behind the globe to achieve sensory block and ocular akinesia.

Peribulbar block: Injection of anaesthetic outside the muscle cone, often requiring multiple injections, to provide anaesthesia and partial akinesia.

Sub-Tenon anaesthesia: Administration of anaesthetic into the space between Tenon’s capsule and the sclera using a blunt cannula, reducing risk of sharp-needle complications.

Akinesia: Absence of voluntary eye movement, essential for precise microsurgical manoeuvres.

References

1. Safety and feasibility of sutureless pars-plana vitrectomy in sub-Tenon anesthesia (SAFE-VISA): a prospective study. European Journal of Medical Research (2023).
2. Pain during pars plana vitrectomy following sub-Tenon versus peribulbar anesthesia: A randomized trial. PLOS ONE (2020).
3. A comparison between topical and retrobulbar anesthesia in 27-gauge vitrectomy for vitreous floaters: a randomized controlled trial. BMC Ophthalmology (2018).
4. Ambulatory cataract surgery centre without perioperative anaesthesia care: a prospective cohort study. Scientific Reports (2021).