The short explanation
Please remove the lenses and get your eye checked today rather than waiting. A red, painful eye with sensitivity to light in someone who wears contact lenses, especially after sleeping in them, can be a sign of a corneal ulcer or infection called keratitis. These can get worse quickly and may affect vision if not treated early. Not every red eye in a lens wearer is serious, and some cases turn out to be irritation or a scratch. But only an eye examination with a special light and dye can tell. Do not use any old drops at home, especially steroid drops, which can make some infections much worse. Keep the lenses and case to show the doctor, as they may help identify the cause.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Sleeping in lenses, swimming or showering in them, and using tap water to clean them increase the risk of infection.
- Blurred vision, a white spot on the coloured part of the eye, or discharge make it more urgent.
- Do not wear contact lenses again until the doctor says the eye has healed.
- Eye hospitals and government medical college eye departments can see urgent cases.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether you have an infection or a less serious problem. An urgent eye examination is needed.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is there an infection or ulcer on my cornea?
- What treatment do I need, and how soon will it improve?
- When can I wear lenses again?
- How can I prevent this in the future?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to an emergency eye service today if pain is severe, vision is blurred, or you see a white spot on the eye.
Get help the same day
- Get your eye examined the same day even if pain eases after removing the lenses.
Sources
The evidence this explanation is built on.
- Red eye NHS
- Eye care MedlinePlus (US National Library of Medicine)
- Eye diseases MedlinePlus (US National Library of Medicine)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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