Waking up to find one of your eyes suddenly red can be alarming. While some causes of eye redness are harmless and temporary, others may signal a more serious condition that requires prompt attention. Understanding the possible reasons behind sudden redness in one eye can help you determine when it’s safe to wait and when it’s time to see an optometrist.
 

Subconjunctival Hemorrhage

This occurs when a tiny blood vessel breaks beneath the clear surface of your eye (the conjunctiva). It often looks more dramatic than it feels - a bright red patch on the white of the eye. It’s usually painless and resolves on its own in one to two weeks.
 

Dry Eye or Irritation

Environmental factors like wind, smoke, or prolonged screen use can cause dryness and irritation, leading to redness in one eye. Artificial tears often provide relief, but persistent dryness should be evaluated by your eye doctor.
 

Conjunctivitis (Pink Eye)

Infections or allergies may cause one eye to become red, itchy, and watery. Bacterial conjunctivitis often requires prescription eye drops, while viral or allergic cases may need supportive care.
 

Foreign Object or Injury

Something as small as dust or an eyelash can scratch the eye’s surface, causing redness, discomfort, and tearing. More significant injuries may lead to lasting damage if not treated promptly.
 

Contact Lens Problems

Wearing contacts for too long, not cleaning them properly, or sleeping in them can irritate your eyes and result in redness. Proper lens hygiene is essential to prevent infections and complications.
 

Serious Conditions That Require Prompt Care

While some causes of redness are minor, others can be urgent. You should contact an eye doctor immediately if your redness is accompanied by:

• Sudden pain or throbbing in the eye

• Blurred or decreased vision

• Sensitivity to light

• Discharge from the eye

• A history of glaucoma or recent eye surgery

These symptoms may indicate conditions such as uveitis, keratitis, acute glaucoma, or a serious corneal infection - all of which require timely treatment to protect your vision.
 

Get Expert Care for Your Vision

Sudden redness in one eye shouldn’t be ignored, especially if it comes with pain, vision changes, or other concerning symptoms. While some causes are harmless, others may threaten your eye health if left untreated. Our team can help diagnose the cause of your eye redness and recommend the right treatment.

If you’ve noticed sudden redness in one eye, schedule an eye exam with Albright Eyecare for a thorough evaluation and peace of mind. Visit our office in New Braunfels, Texas, or call (830) 271-4900 for further guidance.