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
Blow out fracture of orbit involved ? 
Select and explain. 
A. Floor, B. Medial wall, C. Lateral wall, D. Roof
C: Lateral wall
Answer: C: Lateral wall 
Explanation: Ans. is 'c' i.e., Middle meatus In dacryocystorhinostomy, medial wall of the lacrimal sac is connected to lateral nasal wall at middle meatus