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Recent causes of subconjunctival hemorrhage
Tatsuya Mimura1, Tomohiko Usui, Satoru Yamagami
1Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan. mimurat-tky@umin.ac.jp
Summary
Subconjunctival hemorrhage (SCH) risk factors vary by age. Younger patients often experience SCH due to trauma or contact lens injury, while older individuals are more commonly affected by hypertension.
Area of Science:
- Ophthalmology
- Public Health
Background:
- Subconjunctival hemorrhage (SCH) is a common ophthalmic finding.
- Understanding age-specific risk factors is crucial for prevention and management.
Purpose of the Study:
- To investigate the relationship between subconjunctival hemorrhage incidence and patient age across seasons.
- To identify current risk factors associated with subconjunctival hemorrhage.
Main Methods:
- A retrospective study involving 161 patients diagnosed with SCH.
- Data collected included patient age, gender, medical history, and ocular history.
Main Results:
- The peak age for SCH onset was observed between 61 and 70 years.
- In younger patients (0-40 years), trauma or contact lens injury was the primary cause (77.7%).
- In older patients (61-94 years), hypertension was the leading risk factor (47.5%), followed by unknown etiology (39.4%) and diabetes (13.1%).
Conclusions:
- Trauma and contact lens use are significant risk factors for SCH in younger populations.
- Hypertension is the predominant risk factor for SCH in older adults.
- A decrease in acute hemorrhagic conjunctivitis incidence was noted.
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