This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
All of the following are features of central retinal aery occlusion except 
Select and explain. 
A. Cherry red spot at macula, B. Multiple superficial haemorrhages, C. Marked narrowing of retinal aerioles, D. Retinal oedema
B: Multiple superficial haemorrhages
Answer: B: Multiple superficial haemorrhages 
Explanation: Central retinal aery occlusion (CRAO) It occurs due to obstruction at the level of lamina cribrosa. clinical features: Symptoms: Patient complains of sudden painless loss of vision. Signs: Direct pupillary light reflex is absent. On ophthalmoscopic examination retinal aeries are markedly narrowed but retinal veins look almost normal. Retina becomes milky white due to oedema. Central pa of the macular area shows cherry-red spot due to vascular choroid shining through the thin retina of this region. Blood column within the retinal veins is segmented (cattle- trucking). After a few weeks the oedema subsides, and atrophic changes occur which include grossly attenuated thread-like aeries and consecutive optic atrophy. Ref:- A K KHURANA; pg num:-255