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Subconjunctival bleeding is a small bleed under the conjunctiva, the clear tissue covering the white of the eye. It often looks like a bright red patch with sharp borders. The condition is usually painless and does not affect vision. Most cases clear on the own as the blood is reabsorbed.
read more about subconjunctival bleeding ...A small blood vessel can break from minor triggers such as coughing, sneezing, vomiting, or heavy lifting. Rubbing the eye, contact lens irritation, and minor trauma can also cause bleeding. Blood thinners and anti-platelet medicines can raise risk because small bleeds occur more easily. High blood pressure is linked to higher likelihood, especially when episodes recur. In many cases, no single trigger is identified, even though the appearance looks dramatic.
Most cases cause no pain, no discharge, and no vision change. The main sign is the visible red patch, which can spread for a day as blood tracks under the conjunctiva. A mild scratchy sensation can occur when dryness or irritation is present, but sharp pain is not typical. The red area often changes color as it heals, moving toward orange, yellow, or faint pink. Pain, light sensitivity, or blurred vision suggests a different problem and needs evaluation.
Diagnosis is usually clinical, based on appearance during an eye exam. The clinician may check blood pressure and review medicine use, especially when bleeding recurs. If trauma occurred, the exam focuses on ruling out deeper injury, including corneal abrasion or internal bleeding. A slit-lamp exam can confirm that bleeding is superficial and not affecting the cornea or front chamber. Testing beyond that is not common unless other symptoms or frequent recurrence suggest a systemic issue.
Most cases do not need treatment, since the blood clears with time. Artificial tears can improve comfort when the eye feels dry or irritated. Avoiding eye rubbing helps prevent repeat bleeding during healing. If blood thinner use is involved, medication changes should only happen under medical guidance. Urgent assessment is needed when bleeding follows significant trauma, when pain or vision change occurs, or when the eye becomes very sensitive to light.
Usually, no. Most cases are harmless and clear without treatment. Danger is more likely when there is trauma, pain, or vision change, which can point to deeper injury. An eye exam can confirm the cause when symptoms do not match the usual pattern.
Many cases clear in about one to two weeks. Larger bleeds can take longer, especially when the red patch covers a bigger area. The color often shifts as the blood breaks down and is absorbed. Healing time can vary based on age and medicine use.
High blood pressure is a known risk factor and can increase recurrence likelihood. Checking blood pressure is a common step, especially when bleeding happens repeatedly or without a clear trigger. Managing blood pressure supports overall vascular health.
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What is a Subconjunctival Hemorrhage? American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/what-is-subconjunctival-hemorrhage. Date Accessed February 4, 2026.
Subconjunctival hemorrhage. MedlinePlus Medical Encyclopedia. https://medlineplus.gov/ency/article/001616.htm. Date Accessed February 4, 2026.
Subconjunctival Hemorrhage. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK551666/. Date Accessed February 4, 2026.
Subconjunctival Hemorrhage. EyeWiki. https://eyewiki.org/Subconjunctival_Hemorrhage. Date Accessed February 4, 2026.