A patient who makes her own saline solution for her contact lenses is examined at her physician's office because she has a blood red,infected right eye.The doctor performs bacterial,fungal,and viral cultures,all of which are negative.What is the most probable cause of this infection?

Question

Quizplus · Accepted Answer

Acanthamoeba spp.are the most frequent isolates.Homemade saline solution associated with contact lens wear was the original identified risk factor.Amebic keratitis is often mistaken for viral or fungal keratitis,and a diagnosis of amebic keratitis is made only when all other cultures (bacterial,fungal,and viral)are negative.

A Patient Who Makes Her Own Saline Solution for Her