USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 21-year-old woman comes to the emergency department because of bilateral eye pain, tearing,and photophobia. These symptoms began about 2 hours ago with sudden onset. The house the patient lives in recently installed a sun-tanning station. Physical examination shows normal visual acuity, intact extraocular eye movements, and pupils are equal, round, and reactive to light. Intra-ocular pressure is within normal limits. Slit-lamp examination is normal, but fluorescein examination under cobalt blue light illuminates small dots throughout the cornea. Which of the following is the most likely diagnosis?