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Colour fundus photograph (a) and ultrasound image (b) to show advanced proliferative diabetic retinopathy. The fundus image shows evidence of fibrovascular proliferation, pre-retinal haemorrhage, and tractional retinal detachment involving the macula, while the ultrasound shows partial posterior vitreous detachment with vitreous attachment to tractional retinal detachment. Calliper placement shows measurement of height and longitudinal base dimension of tractional detachment.
