This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Conjunctiva, Subject name: Ophthalmology
Most common cause of blepharoconjunctivitis 
Select and explain. 
A. Corynebacterium, B. Moraxella lacunata, C. Staph epidermidis, D. Stah aureus
D: Stah aureus
Answer: D: Stah aureus 
Explanation: The most common cause of blepharoconjuctivitis is staph aureus Staphylococcus epidermidis is an innocuous flora of lid and conjunctiva. It can also produce blepharoconjunctivitis. Moraxella lacunata is most common cause of angular conjunctivitis and angular blepharoconjunctivitis. Corynebacterium diphtheriae causes acute membranous conjunctivitis