This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular trauma , Subject name: Ophthalmology
All of the following are true about blood staining of the cornea except 
Select and explain. 
A. Its occurrence is hastened by the raised intraocular pressure, B. Visual prognosis is usually poor in such cases, C. It clears from centre towards periphery, D. Its clearance may take 2 years or more
C: It clears from centre towards periphery
Answer: C: It clears from centre towards periphery 
Explanation: BLUNT TRAUMA Cornea Blood staining of cornea: It may occur occasionally from the associated hyphaema and raised intraocular pressure. Cornea becomes reddish brown or greenish in colour and in later stages simulates dislocation of the clear lens into the anterior chamber. It clears very slowly from the periphery towards the centre, the whole process may take even more than two years. Ref:- A K KHURANA; pg num:-404