It can be unsettling to look in the mirror and notice that one side of your eye has turned red. Unlike general redness that spreads across both eyes, redness isolated to a particular area of one eye may feel more alarming. While many causes are harmless and temporary, some require urgent attention from an eye care professional.
Common Causes of Redness on One Side of the Eye
- Subconjunctival Hemorrhage (Broken Blood Vessel)
- A small blood vessel may break beneath the surface of your eye, causing a bright red patch.
- Often painless and harmless, this can occur after coughing, sneezing, or straining.
- Localized Conjunctivitis (Pink Eye)
- While conjunctivitis usually spreads across the eye, in some cases, it can start in just one section.
- Symptoms include redness, itching, and discharge.
- Dry Eye or Irritation
- Environmental factors like wind, dust, or prolonged screen use can cause one part of your eye to appear red.
- Accompanied by burning or gritty sensations.
- Pinguecula or Pterygium
- These are growths on the white part of the eye, often related to sun exposure.
- They can cause redness and irritation in specific areas.
- Injury or Foreign Body
- A scratch (corneal abrasion) or trapped particle can make one side of your eye red and painful.
When Should You Worry?
Seek immediate medical attention if you notice:
- Severe or sudden eye pain
- Blurred or reduced vision
- Sensitivity to light
- Persistent redness lasting more than a few days
- History of eye surgery or trauma
What You Can Do at Home
- Cold compress: Helps soothe irritation and reduce redness.
- Lubricating eye drops: Relieve dryness and irritation.
- Rest your eyes: Reduce screen time and take regular breaks.
- Protective eyewear: Shield your eyes from dust, wind, and UV rays.
Final Note from Enny Eye Care
Not all eye redness is the same. While some causes are minor, others may signal conditions that need urgent care. At Enny Eye Care, we offer comprehensive eye examinations to determine the cause and provide the right treatment.
Don’t ignore changes in your eyes—early care protects your vision.