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  Indian J Med Microbiol
 

Figure 1: After a standard sub-Tenon's block, the ST cannula is swapped for a 19G lacrimal cannula which is rotated 180° to enter the retrobulbar space

Figure 1: After a standard sub-Tenon's block, the ST cannula is swapped for a 19G lacrimal cannula which is rotated 180° to enter the retrobulbar space