A 39-year-old man, Groeschen, lost vision in one eye after sleeping with contact lenses on. Initially dismissing irritation as allergies, he later learned he had a *Pseudomonas* infection, which caused a corneal ulcer and permanent scar tissue.

Though antibiotics cleared the bacteria, his sight could only be restored with a cornea transplant, requiring a year-long recovery. Despite his lenses being labeled safe for overnight use, experts warn against it, as sleeping in contacts significantly raises infection risks.

**Contact Lens Safety Tips**:
– Never sleep in lenses.
– Replace lens cases regularly.
– Always use fresh solution.
– Opt for daily-wear lenses.

Groeschen’s story highlights the importance of proper lens hygiene to protect eye health.