1. Anaesthesia tutorial of the week 135: Anaesthesia for ophthalmic surgery. https://www.frca.co.uk/Documents/135%20Ophthalmic%20anaesthesia%20-%20part%201.pdf (accessed 30 June 2019).
2. Regional anaesthesia for ophthalmic surgery;Anker;BJA Educ,2017
3. Anatomy for Anaesthetists;Ellis,2004
4. Applied anatomy for anaesthesia and intensive care;Georgiou,2014
5. Anatomy for ophthalmic anaesthesia;Johnson;Br J Anaesth,1995