What caused this boy's suddenly blurred vision?

Evan is an 11-year-old regular patient of the practice who presents with blurry vision in his left eye.

Test your clinical know-how by taking the quiz below. If you select the wrong answer, have another go — you can try as many times as you like!


Dr Kate Kelso is a GP and medical editor at Australian Doctor.

  1. BMJ 2021; 372 :n140