The most obvious sign of a subconjunctival hemorrhage is a bright red patch on the white (sclera) of your eye.
Despite its bloody appearance, a subconjunctival hemorrhage should cause no change in your vision, no discharge from your eye and no pain. Your only discomfort may be a scratchy feeling on the surface of your eye.
When to see a doctor
If you have recurrent subconjunctival hemorrhages or other bleeding, talk to your doctor.
The cause of a subconjunctival hemorrhage isn't always known. The following actions may cause a small blood vessel to rupture in your eye:
- Violent coughing
- Powerful sneezing
In some cases, a subconjunctival hemorrhage may result from an eye injury, including:
- Roughly rubbing your eye
- Trauma, such as a foreign object injuring your eye
Risk factors for a subconjunctival hemorrhage include:
- High blood pressure (hypertension)
- Certain blood-thinning medications, such as warfarin (Coumadin, Jantoven) and aspirin
- Blood-clotting disorders
Health complications from a subconjunctival hemorrhage are rare. If your condition is due to trauma, your doctor may evaluate your eye to ensure you don't have other eye complications or injury.
Oct. 21, 2016
- Riordan-Eva P, et al. Conjunctiva & Tears. In: Vaughan & Asbury's General Ophthalmology. 18th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com. Accessed June 6, 2016.
- Jacobs DS. Evaluation of the red eye. http://www.uptodate.com/home. Accessed June 6, 2016.
- Longo DL, et al., eds. Disorders of the eye. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.com. Accessed June 6, 2016.
- Gardiner MF. Conjunctival injury. http://www.uptodate.com/home. Accessed June 6, 2016.
- Subconjunctival hemorrhage causes. American Academy of Ophthalmology. http://www.aao.org/eye-health/diseases/subconjunctival-hemorrhage-cause. Accessed June 6, 2016.
- Stone CK, et al., eds. Eye emergencies. In: Current Diagnosis & Treatment Emergency Medicine. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com. Accessed June 6, 2016.
Subconjunctival hemorrhage (broken blood vessel in eye)