Laboratory Studies
- Terson syndrome can be diagnosed by its unique clinical presentation of simultaneous intracranial and intraocular hemorrhage. A thorough history must be obtained to rule out causes of preexisting intraocular hemorrhages (eg, diabetic retinopathy, age-related macular degeneration, sickle cell disease, intraocular tumor). In cases associated with trauma, a posterior vitreous detachment, retinal break, or retinal detachment also must be ruled out.
- Sickle cell preparation
- Glucose level and glucose tolerance test to rule out diabetes
Imaging Studies
- Neuroimaging studies, including CT scan, MRI, or angiography, are necessary to document intracranial hemorrhage.
- B-scan ultrasound may be necessary to determine the severity of vitreous hemorrhage and to rule out a retinal detachment if no view to the posterior pole is possible, particularly in the setting of trauma.
Other Tests
- Examination of the cerebrospinal fluid should be deferred to a neurologist.
Diagnostic Procedures
- Both a history and a clinical examination are indicated to help diagnose this condition.
Histologic Findings
Pathologic specimens of patients with Terson syndrome have shown abundant erythrocytes with occasional leukocytes in the vitreous, subhyaloidal and subinternal limiting membrane space, and retina. Clinical case reports have documented subretinal blood, but this is not as common. Epiretinal membranes examined in Terson syndrome show glial cells and basement membrane material.
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