Mr Trench is a 38 year old male who has made an emergency appointment as he is concerned about his eyes. He is obviously in a great deal of discomfort. Mr Trench explains that he has felt non-specifically unwell for a few days. This morning he woke up with redness, photophobia and painful vision in his right eye. He has taken Ibuprofen but is still in a lot of pain. Mr Trench has Hypertension and Non-alcoholic fatty liver disease and was diagnosed with HIV two years ago. On examination of his right eye, there is conjunctival injection, reduced corneal sensitivity and a crop of vesicles on the upper lid margin. His visual acuity is intact and eye movements are normal.
Given the likely diagnosis what is the most suitable management plan?