All of the following are true for anaemic retinopathy except
**Anaemic Retinopathy**
### **Core Concept**
Anaemic retinopathy is a condition characterized by the changes in the retina due to severe anaemia, particularly in cases of chronic or acute blood loss. It occurs due to the decreased oxygen delivery to the retina, leading to the release of various vasoactive factors and the resultant microvascular changes.
### **Why the Correct Answer is Right**
Anaemic retinopathy typically presents with flame-shaped haemorrhages, cotton-wool spots, and retinal oedema due to the breakdown of the blood-retinal barrier. The decreased oxygen levels trigger the release of vasodilatory substances, leading to the widening of retinal arterioles, which in turn causes the haemorrhages. The cotton-wool spots are a result of the accumulation of axoplasmic material in the retinal nerve fibre layer.
### **Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because flame-shaped haemorrhages are indeed a characteristic feature of anaemic retinopathy, not a feature that is absent from the condition.
**Option B:** This option is incorrect because cotton-wool spots are a common finding in anaemic retinopathy, not something that is not seen in this condition.
**Option D:** This option is incorrect because retinal oedema is a characteristic feature of anaemic retinopathy, not a feature that is absent from the condition.
### **Clinical Pearl / High-Yield Fact**
Anaemic retinopathy can be a sign of severe anaemia and should prompt a thorough investigation for the underlying cause. It is essential to note that the presence of retinal haemorrhages in a patient with anaemia can be a critical clue to the diagnosis of anaemic retinopathy.
### **Correct Answer:** A.