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Hyposphagma – Subconjunctival Hemorrhage Explained
Hyposphagma is a bleeding beneath the conjunctiva of the eye, causing a visible red patch. It is usually harmless and resolves on its own within a few weeks.
Add as Preferred SourceThings worth knowing about "Hyposphagma"
Hyposphagma is a bleeding beneath the conjunctiva of the eye, causing a visible red patch. It is usually harmless and resolves on its own within a few weeks.
What is a Hyposphagma?
A hyposphagma (also called a subconjunctival hemorrhage) is a collection of blood between the conjunctiva (the thin, transparent membrane covering the white of the eye) and the underlying sclera (the white of the eye). It appears as a bright red or dark red patch on the surface of the eye. Although the appearance can be alarming, a hyposphagma is in most cases harmless and resolves without treatment.
Causes
A hyposphagma occurs when small blood vessels (capillaries) in the conjunctiva rupture and blood leaks out. Common causes include:
- Mechanical factors: Rubbing the eye, foreign bodies, or minor trauma
- Increased pressure: Intense coughing, sneezing, vomiting, or straining (e.g., during bowel movements)
- High blood pressure (arterial hypertension)
- Blood clotting disorders or blood-thinning medications (e.g., aspirin, warfarin)
- Contact lens wear: Irritation from poorly fitting lenses
- Ophthalmic procedures or eye examinations
- Idiopathic causes: No identifiable cause (very common)
Symptoms
The hallmark of a hyposphagma is the sharply defined red patch on the white of the eye, which does not move with eye movement. Associated symptoms may include:
- A mild sensation of pressure or a foreign body feeling in the eye
- Little to no pain
- No impairment of vision
Severe pain, visual disturbances, or trauma as a triggering event should always be evaluated by a medical professional.
Diagnosis
Diagnosis is typically made through a clinical eye examination. An ophthalmologist assesses the extent of the hemorrhage and rules out more serious underlying causes. If a systemic condition is suspected, the following tests may be performed:
- Blood pressure measurement
- Blood count and coagulation tests
- Slit-lamp examination of the eye
Treatment
In most cases, no specific treatment is necessary. The blood is gradually reabsorbed by the body within 1 to 3 weeks, and the red patch typically fades from red to yellow-green before disappearing completely. Supportive measures include:
- Cold compresses applied in the first few hours after onset
- Lubricating eye drops to relieve dryness or irritation
- Avoiding triggering factors such as rubbing the eye
If an underlying condition such as high blood pressure or a clotting disorder is identified, it should be treated to prevent recurrence.
When to See a Doctor?
Medical evaluation is recommended if:
- The hyposphagma was caused by trauma or an eye injury
- Visual disturbances or severe pain are present
- The bleeding spreads to cover the entire eyeball
- Hemorrhages occur repeatedly without an obvious cause
- There is a known bleeding disorder or anticoagulant medication use
References
- Grehn, F. (2019). Augenheilkunde. 32nd edition. Springer Medizin Verlag.
- Kaufman, P. L., Alm, A. (Eds.) (2011). Adler's Physiology of the Eye. 11th edition. Saunders Elsevier.
- American Academy of Ophthalmology (AAO) (2023). Subconjunctival Hemorrhage (Hyposphagma). Retrieved from: www.aao.org
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