April 1st 2007
A 13-year-old boy presented with marked periorbital swelling of the left eyelid that started 12 hours earlier. His eyelashes and lid were matted with yellow discharge. He did not wear contact lenses or eyeglasses and denied ocular trauma or foreign bodies. He had been nauseated and vomited once; his mother attributed these symptoms to an antibiotic he had been taking for 5 days for a sinus infection. The medical history was noncontributory; there was no family history of ocular problems.