A 38-year-old intravenous drug user presented to eye casualty with a 2-day history of central visual loss and distortion in his left eye. Snellen visual acuity in the right eye was 6/9 and in the left eye 1/60. Fundal examination revealed localised retinal haemorrhages and white subretinal infiltrates at the left macula suggestive of Candida retinitis (figure 1A). Our patient admitted to using lemon juice to dilute his heroin before injection. Lemon juice is well known to be a source of Candida endophthalmitis.1–3 Fungal …