The most frequent reason for lens discontinuation, causing stinging, burning, or a "gritty" sensation.
Often caused by Pseudomonas aeruginosa or Staphylococcus , frequently linked to poor hygiene or sleeping in lenses.
Contact lens complications range from mild irritation to sight-threatening infections. While lenses are generally safe, they interact directly with the cornea, potentially disrupting its oxygen supply and natural defenses. Common Non-Infectious Complications
Contact Lens–Related Complications - StatPearls - NCBI - NIH
Swelling of the cornea, typically due to a lack of oxygen from overwearing lenses or a poor fit.
Small white inflammatory spots on the cornea that are not caused by an active infection but can indicate corneal distress. Serious Infectious Complications
Many complications are related to the mechanical presence of the lens or a lack of oxygen (hypoxia) reaching the eye.