Mustapha, Mushawiahti, et al. “Sub-Tenon Anaesthesia Versus Intracameral Anaesthesia in Patients Undergoing Cataract Extraction: A Comparative Study of the Level of Pain, Visual Perception and Anxiety”. International Journal of Medical Students, vol. 2, no. 2, June 2014, pp. 49-52, doi:10.5195/ijms.2014.83.