What condition can result from hypoxia associated with soft contact lens wear?

Hypoxia, or the lack of sufficient oxygen supply to the cornea, is a significant concern with soft contact lens wear, particularly if the lenses are not designed to allow adequate oxygen transmission. One of the primary effects of hypoxia is corneal swelling, also known as edema. This occurs because the corneal epithelium relies on oxygen dissolved in the tear film to maintain its health and clarity. When oxygen levels are reduced due to contact lens wear, the cornea compensates by absorbing excess fluid, leading to swelling.

Corneal swelling can manifest as visual disturbances, discomfort, and changes in the appearance of the cornea, such as a hazy or blurred vision. It is critical for practitioners to educate patients on proper contact lens care, appropriate wear schedules, and the importance of regular eye examinations to monitor for any signs of hypoxia and protect against potential complications. Gentle handling of contact lenses and choosing lenses with high Dk/t values can help mitigate the risk of corneal swelling related to hypoxia during lens wear.