Most contact lenses are intended to be removed before sleep. Closing your eyes while wearing lenses changes the environment on the eye and can increase the risk of complications, including infection. A lens that feels comfortable at bedtime does not mean it is safe to sleep in. Short naps count as sleep, so removing lenses before resting is a sensible habit unless your eye care professional has prescribed a lens and schedule specifically approved for overnight wear.
Some lenses may be labelled for extended or overnight wear, but approval depends on the product and on your individual eye health. Extended wear is not risk-free, and an eye care professional should explain the benefits, risks, and follow-up needed. Do not assume that all lenses made from a particular material can be worn overnight. Never copy another person’s routine or rely on advertising language instead of instructions for your own prescribed lenses.
If you accidentally fall asleep in lenses, do not pull out a lens that feels stuck or dry. Use only an appropriate rewetting product if your practitioner has recommended one, allow the lens to move naturally, and remove it gently. Wear glasses afterward and watch for symptoms. Pain, redness, light sensitivity, discharge, or reduced vision warrants prompt professional advice. If accidental overnight wear happens repeatedly, discuss practical ways to make removal part of your bedtime routine.