Overnight contact wear refers to sleeping in lenses that are approved for extended or continuous wear. While convenient for some, it carries a higher risk of serious infection than daytime wear only.
Considerations and Risks
Closing the eyes reduces oxygen reaching the cornea, and lenses further limit this supply, promoting dryness and susceptibility to microbes. Even with modern high‑oxygen materials, rates of corneal infection remain greater than for daily wear.
- Only specific lens types are licensed for extended wear
- Not everyone is suitable, especially if they have previous infections or dry eye
- Smoking and poor hygiene increase risk further
- Prompt recognition of pain, redness, or blurred vision is essential
If You Use Overnight Wear
This option should be undertaken only under close professional supervision with clear instructions on maximum wear times and emergency contact pathways. Many people prefer safer alternatives such as daily disposables.
- Attend regular check‑ups to monitor corneal health
- Remove lenses at the first sign of discomfort and seek urgent advice
- Have a spare pair of spectacles for non‑wear periods
- Review ongoing suitability periodically with your eye care professional
