Location and extent of subconjunctival hemorrhage.
OBJECTIVE
Subconjunctival hemorrhage (SCH) is a relatively frequent disease; however, there have been no reports about its location and extent. We examined its location and extent.


METHODS
A total of 151 patients with SCH aged 2-94 years were studied. The conjunctiva was divided into 8 equal areas. The age, gender, medical history, ocular history and site of hemorrhage were determined for all subjects.


RESULTS
The number of areas involved by SCH showed an age-related increase. Traumatic SCH had a smaller extent compared with SCH related to hypertension, diabetes and hyperlipidemia, or idiopathic SCH. Overall, SCH was significantly more common in the inferior areas than the superior areas (55.3% vs. 25.0%, p < 0.000001). In patients with SCH secondary to trauma or diabetes, however, the temporal areas were affected more often than the nasal areas (61.5% vs. 30.8% and 73.3% vs. 20.0%, respectively).


CONCLUSIONS
SCH showed an age-related increase in extent and was predominant in the inferior areas. However, traumatic SCH was usually detected as localized hemorrhage in the temporal areas.
Mimura
Tatsuya
T
Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan. mimurat-tky@umin.ac.jp
Yamagami
Satoru
S
Usui
Tomohiko
T
Funatsu
Hideharu
H
Noma
Hidetaka
H
Honda
Norihiko
N
Fukuoka
Shima
S
Hotta
Hiroshi
H
Amano
Shiro
S
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003229:Conjunctival Diseases / Q000453:epidemiology* / Q000473:pathology; D005130:Eye Hemorrhage / Q000453:epidemiology* / Q000473:pathology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012307:Risk Factors