A 27-year-old man is referred for left-sided blurry vision. He reports bumping awkwardly into objects on his left side and occasionally breaking those in his path.

A 6-year-old girl is referred by her general practitioner with the chief complaint of a right upper lid swelling.

A 45-year-old Peace Corps volunteer presents for a routine eye checkup in anticipation of moving abroad. The clinical exam reveals an unexpected lesion.

A 54-year-old man is admitted through the emergency room for altered mental status. He is minimally verbal, but endorses 4 days of left eye pain. You are consulted to evaluate the pain and subconjunctival hemorrhage.

A 69-year-old African-American man with a past medical history of insulin-dependent diabetes mellitus type 2 for 30 years and coronary artery disease presents to the ED urgently 3 days after uncomplicated right carotid endarterectomy for 80% stenosis.

A 48-year-old woman presents with sudden onset of unilateral flashing lights and blind spot in her left eye.

A 36-year-old African American man presents with acute vision loss in his right eye. Five months ago, he experienced sudden, painless vision loss in the inferior field of that eye, but could not seek medical help.

A 58-year-old woman presents with sinus pressure, postnasal drip, and painful irritation of the right eye which has worsened over 6 weeks.

A reformed drug addict presents with acute pain, lid erythema, and crippling photophobia in his right eye.