This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
A patient sustained blunt trauma to eye after that the developed sudden loss of vision with deep anterior chamber, Most likely cause is - 
Select and explain. 
A. Lens dislocation, B. Berlin's oedema, C. Retinal haemorrhage, D. Recession of angle of AC
A: Lens dislocation
Answer: A: Lens dislocation 
Explanation: Amongst the given options only two can cause deep anterior chamber :-


Angle recession
Dislocation of the lens


In angle recession, glaucoma develops many years after the trauma and there is no sudden loss of vision.
Dislocation of lens can cause sudden loss of vision immediately.