For one 39-year-old man, what began as a normal morning quickly shifted into a serious medical situation. Mild eye irritation soon escalated into persistent discomfort that could no longer be ignored. When he sought help from specialists at the Cincinnati Eye Institute, doctors discovered a severe infection beneath his contact lens.

The culprit was Pseudomonas aeruginosa—a fast-moving bacterium known to cause corneal ulcers when it enters the eye. Doctors traced the infection to a habit many contact lens wearers underestimate: sleeping with lenses still in. Although some lenses are marketed as safe for extended wear, eye care professionals consistently warn that overnight use greatly increases the risk of infections.

The American Academy of Ophthalmology and his treating physician emphasized that removing lenses before sleep is one of the most important steps in protecting long-term eye health. Despite quick medical intervention, the infection left lasting damage. Scarring on the cornea led to significant vision loss, which ultimately required a corneal transplant. The experience affected both his daily life and his career, serving as a reminder of how easily eye health can be compromised by everyday habits that seem harmless.

To lower the risk of infections, experts recommend following proper lens hygiene: remove lenses before sleeping, wash hands before handling them, clean cases regularly, use fresh solution each time, and schedule routine eye exams. His experience illustrates that small choices can have major consequences—and that careful lens care is essential for preserving clear, healthy vision.