Despite prior treatment of blepharitis, use of perioperative povidone iodine and intracameral antibiotics diminishing the risk of postoperative endophthalmitis, sporadic cases occur.123 The mainstay of treatment comprises intravitreal antibiotics,4 which are commonly given out of hours by junior doctors who often have the responsibility to make up the correct concentration and dose. In a survey of the 12 departments of ophthalmology in Scotland, we found that this is the case for nine, and none provide prior training.

We have investigated whether prior …