Author: Umar Ahmed / Editor: Nick Tilbury / Codes: OptP3, OptP4, SLO1 / Published: 12/12/2022

A 22-year-old female presents to the Emergency Department (ED) after waking up with photophobia in the right eye.

She states she has also had pain, irritation and a gritty sensation in the same eye for the past two days. She is unsure if her vision is worse or not in the affected eye.

Upon taking a further history she admits to wearing her contact lens at night after a night out a few days ago.

Using a Snellen chart, visual acuity is 6/6 in the left eye and 6/9 in the right eye.

Examination of the right eye and fundoscopy show a hyperaemic conjunctiva, a regular pupil and an opacity on the anterior surface of the cornea.