This procedure is performed in the eye clinic and does not involve surgery as such. Eye drops will be instilled in your eyes to anaesthetise the eyes, dilate the pupils and allowvisualisation of your retina. A special focussing lens is then placed on the eye and laser delivered gently using a specially designed retinal laser machine. You will experience brightflashing lights during the procedure and are unlikely to feel any significant discomfort. Occasionally, usually when a lot of previous laser has been performed for PDR, some discomfort may be felt, but thankfully, there are ways in which this treatment can be madepain–free in such circumstances. Risks associated with laser treatment are rare, particularly in experienced hands, but can include some reduction in central vision or colour perception,and some reduction in night and peripheral vision (likely only if lots of laser is required, andis less common with more modern lasers).