Groeschen, 39, woke up with an irritated eye, assuming it was due to allergies. However, his eye worsened, leading him to seek medical help, where he was diagnosed with a Pseudomonas infection caused by sleeping with his contact lenses on.

Although antibiotics cleared the infection, the bacteria left him with a corneal ulcer and permanent vision loss due to scar tissue. To regain sight, he would need a cornea transplant, a year-long recovery process. While his contacts’ packaging indicated they were safe for overnight wear, experts warn against it, as it raises infection risks. The American Academy of Ophthalmology advises against sleeping in any type of contacts, urging users to follow safe hygiene practices.