Which of the following statements regarding the pathogenesis of bacterial orbital cellulitis is correct?
A. sinus-related, most commonly ethmoidal, typically affects children
B. extension of the preseptal cellulitis through the orbital septum
C. local spread from adjacent dacryocystitis, mid-facial or dental infection
D. all of above
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Which of the following statements regarding the symptoms of papilledema is correct?
A. Headaches
B. Nausea and vomiting
C. deterioration of consciousness
D. all of above
What are the clinical manifestations of AION?
A. In the early stage, we can find mild optic disc edema
B. Patients usually suffer from sudden visual loss, often when they wake up in the morning
C. Severe cases cannot cause blindness
D. all of above
Which of the following statements regarding the risk factors of AION is correct?
A. Diabetes
B. Major bleeding
C. Internal carotid artery stenosis
D. All of above
Which of the following statements regarding the pathogenesis of AION is correct?
A. the lack of blood supply to the optic disc caused by the anterior ciliary artery circulation disorder, resulting in acute ischemia, hypoxia and edema of the optic disc
B. the lack of blood supply to the optic disc caused by the posterior ciliary artery circulation disorder, resulting in acute ischemia, hypoxia and edema of the optic disc
C. Pathologically, it can be divided into arteritis and non-arteritis
D. None of the above
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