<prompt> All of the following are true for anaemic retinopathy exceptOccurs when haemoglobin level falls below 5 gmAerioles become paleVeins are pale and narrowSuperficial retinal and subhyaloid haemorrhage are seen  <response>: Anaemic retinopathy In anaemia, retinal changes are liable to occur when haemoglobin level falls by 50 percent and are consistently present when it is below 35 percent 5 gm. Anaemic retinopathy is characterised by pale aerioles and a pale general background of the fundus. Retinal veins are dilated. Superficial retinal and preretinal subhyaloid haemorrhages may be seen in posterior half of the fundus. A few haemorrhages have white centres Roth spots. Rarely, a few soft exudates cotton-wool patches may also be present. Ref:- A K KHURANA; pg num:-264 