Is eye infections an emergency?
Usually not — most eye infections like pink eye or a stye are minor and treatable with drops. But sudden vision loss, severe eye pain, a red eye with blurred vision, an infection after eye injury, or a painful red eye in a contact-lens wearer is an emergency that can threaten sight.
Most Eye Infections Are Not Emergencies
The majority of eye infections are minor. Viral and bacterial conjunctivitis (pink eye), styes, and mild eyelid irritation cause redness, itching, watering, and crusty discharge but leave your vision normal and your pain mild. These clear up with prescription drops or ointment, or on their own, and do not require an emergency room.
The Red Flags That Make an Eye Infection an Emergency
An eye infection becomes vision-threatening when it reaches the cornea or the tissues around and behind the eye. Come to the ER right away if you have any of these:
- Sudden or worsening vision loss in the affected eye
- Severe eye pain, not just discomfort or grittiness
- Marked light sensitivity (bright light causes real pain)
- A red eye combined with blurred or decreased vision — this can signal a corneal ulcer, a herpes eye infection, or an infection inside the eye
- Any eye infection after an injury or chemical splash
- A painful, red, or light-sensitive eye in a contact-lens wearer — lens wearers are at high risk for bacterial keratitis, a corneal infection that can progress within a day
- A red, hot, swollen, painful eyelid, a bulging eye, or painful/limited eye movement, especially with fever — this may be orbital cellulitis, a serious infection behind the eye that needs IV antibiotics
When to Call 911 Instead of Driving In
Call 911 for eye symptoms combined with a severe sudden headache, confusion, or one-sided weakness or numbness. That combination can mean a stroke rather than an eye infection, and minutes matter. Also call 911 for a chemical splash to the eye if you cannot rinse and travel safely at the same time.
Bellaire ER Can Tell the Difference
Our board-certified emergency physicians use fluorescein dye and a slit lamp to reveal corneal ulcers and infections that are invisible to the naked eye, and we can measure eye pressure and start antibiotic or antiviral treatment on site. For a complete guide, see our eye infections page. If you are unsure whether your symptoms are dangerous, walk in any time to 5302 Bellaire Blvd or call (713) 660-0001 — we are open 24/7.