<P> Such a hemorrhage may be caused by a sudden or severe sneeze or cough, or due to high blood pressure or as a side effect of blood thinners such as aspirin or warfarin . It may also be caused by heavy lifting, vomiting, or even rubbing one's eyes too roughly . In other cases, it may result from being choked or from straining due to constipation . Also, it can result as a minor post-operative complication in eye surgeries such as LASIK . </P> <P> Whereas a bruise typically appears black or blue underneath the skin, a subconjunctival hemorrhage initially appears bright - red underneath the transparent conjunctiva . Later, the hemorrhage may spread and become green or yellow, like a bruise . Usually this disappears within 2 weeks . </P> <P> Although its appearance may be alarming, in general a subconjunctival hemorrhage is a painless and harmless condition; however, it may be associated with high blood pressure, trauma to the eye, or a base of skull fracture if there is no posterior border of the hemorrhage visible . </P> <Ul> <Li> It may result from being choked </Li> <Li> Certain infections of the outside of the eye (conjunctivitis) where a virus or a bacteria weaken the walls of small blood vessels under the conjunctiva </Li> <Li> Mask squeeze from diving and not equalizing mask pressure during descent </Li> <Li> Eye trauma </Li> <Li> Coagulation disorder (congenital or acquired) </Li> <Li> Head injury </Li> <Li> Whooping cough or other extreme sneezing or coughing </Li> <Li> Severe hypertension </Li> <Li> LASIK </Li> <Li> Acute hemorrhagic conjunctivitis (caused by Enterovirus 70 or Coxsackie A virus) </Li> <Li> Leptospirosis </Li> <Li> Ebola </Li> <Li> Increased venous pressure (e.g., extreme g - force, straining, vomiting, choking, or coughing) or from straining due to constipation </Li> <Li> Zygoma fracture (results in lateral subconjunctival hemorrhage) </Li> </Ul>

Icd 10 code for broken blood vessel in right eye