This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Halos due to conjunctiva can be eliminated by 
Select and explain. 
A. Slit, B. Irrigation, C. Syringing, D. Any of the above
B: Irrigation
Answer: B: Irrigation 
Explanation: Irrigation of the cul de sac can reduce the halos in conjunctivitis Halos due to immature senile cataract are broken by slit (Fincham test) Halos due to corneal edema in glaucoma is reduced by decrease in IOP