Although the look of a sub-conjunctival hemorrhage or blood clot may be alarming, it is generally a painless and harmless condition. The causes could be - Minor eye trauma increased venous pressure Strenuous Exercising Coughing Vomiting Sneezing Blood dyscrasia (rare) Severe hypertension A subconjunctival hemorrhage is typically a self-limiting condition that requires no treatment in the absence of infection or significant trauma. Low blood pressure does not cause this condition. Thanks.
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