Patients with Proliferative Diabetic Retinopathy should receive scatter laser photocoagulation as soon as possible following diagnosis of the condition. This treatment is also known as pan-retinal laser photocoagulation. Laser is a powerful pencil beam of light of single wavelength which can burn and seal these leaking blood vessels. By causing regression of the neovascular tissues, the risk of severe visual loss is substantially reduced. Scatter laser photocoagulation (also known as PRP, or pan-retinal photocoagulation) is an in-office or out-patient procedure done with or without an anesthetic injection adjacent to the eye. Laser treatment is done mainly for stabilisation of vision and some patients may have improvement in vision.