What is a common cause of Acanthamoeba keratitis in contact lens wearers?

Acanthamoeba keratitis is an eye infection caused by the Acanthamoeba organism, which can be particularly problematic for contact lens wearers. The correct answer centers around the fact that these infections commonly arise from exposure to contaminated water or solutions. Contact lens wearers are at a heightened risk for Acanthamoeba keratitis because they may inadvertently introduce the organism into their eyes through various means, such as using tap water to clean lenses, swimming in contaminated water while wearing lenses, or even exposure to contaminated contact lens solutions.

Maintaining proper hygiene and avoiding direct exposure to potentially contaminated water can significantly reduce the risk of developing this condition. This is why understanding the source of infections, particularly the role of water contamination, is critical for anyone who wears contact lenses.