An 18-year-old girl presented to an ophthalmologist with complaints of redness, irritation, lacrimation, and a feeling of the presence of a foreign body in both her eyes. She had been using contact lenses for the last two years.

Her visual acuity was found to be 6/6 with a negative fluorescein test. *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only.