Medically reviewed by Dr. Niranjana Bejan Singh. Written to established clinical-education standards (AAO/Mayo/NHS/NEI) and adapted for this hospital. Not a substitute for professional medical advice.
A foreign body in the eye is a small particle — such as dust, sand, an eyelash, a metal or wood fragment, or a piece of glass — that becomes lodged on the surface of the eye, either on the cornea or the conjunctiva. It commonly causes a gritty, irritated feeling, redness, watering, and light sensitivity. Prompt, careful removal by a trained professional reduces the risk of infection, scarring, or corneal injury.
Who typically needs this
- Anyone with the sensation of something in the eye, especially after outdoor activity, grinding, hammering, gardening, or windy conditions.
- People with visible redness, watering, light sensitivity, or blurred vision following a suspected eye injury.
- Cases where a foreign body cannot be flushed out with clean water at home, or where the object appears embedded rather than floating freely.
- Anyone with a high-velocity injury (such as from metal-on-metal work or power tools), which carries a higher risk of a foreign body penetrating deeper into the eye and needs urgent assessment.
What to expect
- The eye is examined carefully, often with a magnifying instrument (slit lamp), sometimes after everting the eyelids to check underneath them.
- Numbing drops are applied to keep the eye comfortable during examination and removal.
- Superficial foreign bodies are often removed with a gentle stream of sterile saline, a moistened cotton-tipped applicator, or a fine sterile instrument.
- After removal, the surface of the eye is checked for any resulting scratch (corneal abrasion) or embedded rust ring (from metal particles), which may need additional treatment.
- Antibiotic drops or ointment are commonly prescribed afterward to prevent infection while the surface heals.
Recovery
- Mild grittiness or discomfort can persist for a day or two after removal while any surface scratch heals.
- Antibiotic drops or ointment are typically used for several days as directed.
- An eye patch is used less commonly than in the past, but may occasionally be recommended for comfort in specific cases.
- Follow-up is advised if pain, redness, or light sensitivity worsens instead of improving, or if vision becomes blurred.
Risks to know about
- Untreated or improperly removed foreign bodies can lead to infection, corneal scarring, or a persistent corneal abrasion.
- Metal foreign bodies can leave a rust ring in the cornea, which sometimes needs a brief additional procedure to remove fully.
- Deeply embedded or high-velocity foreign bodies carry a risk of penetrating into the eye, which is a more serious injury requiring urgent specialist care.
- Rubbing the eye before removal, or attempting removal with unsterile objects at home, increases the risk of scratching the cornea or pushing the object in further.
Frequently asked questions
Should I try to remove a foreign body myself at home?
Gently flushing with clean water is reasonable for a mild, superficial irritation, but avoid rubbing or using tools, and see an eye professional if it does not come out easily or symptoms persist.
Does removal hurt?
No — numbing drops are used first, so removal itself is generally painless, though some grittiness can return once the drops wear off.
How can I tell if it is a more serious injury?
Severe pain, significant vision loss, a visible cut or embedded object, or injury from a high-speed source are signs to seek urgent care rather than home treatment.
Will my vision be affected afterward?
Most superficial foreign bodies and the resulting minor abrasions heal fully without lasting effect on vision; the doctor will check for any deeper injury that could affect sight.
Ready to see us?
Call the appointment desk, or book online — we will confirm your time by phone.
Sources consulted: Mayo Clinic — Foreign Object in the Eye: First Aid, AAO — First Aid Guide: How to Heal a Scratched Eye . General medical information — not a substitute for professional diagnosis. Medically reviewed by Dr. Niranjana Bejan Singh.
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