White or grey material in the normally transparent cornea, usually composed of inflammatory leukocytes and/or invading microorganisms. May be associated with symptoms. See also Asymptomatic infiltrate(s)
Inflammation of the cornea characterized by focal and/or diffuse sub-epithelial infiltrates with or without epithelial involvement; some cases may slightly stain with fluorescein. Infiltrates may occur anywhere in the cornea, but typically in the limbal area. Patients with IK report mild to moderate irritation (foreign body discomfort), mild hyperaemia and occasionally mild discharge. Lens wear should be discontinued until full resolution occurs. The patient should be monitored carefully over the first 24hours, but in many cases no medication is required. In the long-term there may be a small residual scar, depending upon the aetiology and depth of penetration of the infiltrate.