The patient walks into to the emergency department (ED) complaining of significant pain in the right eye. It appears red and swollen. The pupils are not equal in size or reactivity – the right pupil remains dilated despite the bright exam room and the flash light. The patient cringes from the bright light, though, and complains the bright lights are hurting his head. He reports that over the last week, both eyes have been aching and he has been seeing halos around lights. The nurse prepares for which test to be performed first?

The 23-year-old patient is brought to the emergency department after contacting emergency services to report profound weakness that started in his feet and worsened and spread cranially over the past few days. He reports severe diarrhea after a camping trip a week ago. Upon assessment, strength, sensation, and deep tendon reflexes are significantly reduced, with the lower extremities more severely affected than his upper extremities. Vital signs are normal and the patient seems to be breathing well. The nurse anticipates which finding on the lumbar puncture result?  

During a comprehensive neurologic exam, the provider brushes a wisp of cotton over the patient’s cornea, which causes the patient to blink. The nurse notes that which cranial nerve is intact based on this test?