Extended wear of ocular inserts designed for vision correction during periods of rest presents a variety of potential complications. When the eye is closed, oxygen transmission to the cornea is significantly reduced. These lenses, particularly older hydrogel types, can impede this natural oxygen flow, leading to corneal hypoxia.
Reduced oxygen levels can contribute to several adverse effects, including corneal neovascularization (the growth of new blood vessels), increased risk of infection, inflammation, and discomfort. Furthermore, trapped debris and microorganisms under the lens can exacerbate these issues, potentially leading to serious eye conditions. The cumulative effect poses a considerable risk to long-term ocular health.