Subconjunctival Haemorrhage

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What Is a Subconjunctival Haemorrhage?

A subconjunctival haemorrhage is a bright red patch that appears on the white part of the eye when a small blood vessel breaks just under the conjunctiva. It can look alarming but is usually harmless and painless.

This condition can occur in people of all ages and typically resolves on its own without long-term effects. It does not usually affect vision.

What Causes a Subconjunctival Haemorrhage?

Common causes include:

• Minor trauma or rubbing of the eye
• Sudden increases in pressure, such as from coughing, sneezing, vomiting, or heavy lifting
• Blood-thinning medications (anticoagulants)
• High blood pressure
• Spontaneous occurrence without a clear cause

What Are the Common Symptoms of a Subconjunctival Haemorrhage?

You may notice:

• A bright red or dark red patch on the white of the eye
• Usually no pain or discomfort
• No change in vision
• Mild irritation or scratchy sensation in some cases

How Is a Subconjunctival Haemorrhage Diagnosed?

Diagnosis is usually clinical and based on:

• Appearance of the eye
• History of recent trauma, straining, or medications
• Assessment to rule out underlying conditions if recurrent

Online GP consultations can visually assess the haemorrhage and provide reassurance. In-person review may be needed if there is associated trauma, vision changes, or recurrent bleeding.

How Long Does a Subconjunctival Haemorrhage Last?

• Most resolve within 1–2 weeks
• Colour may change from red to yellow or green as it heals
• Larger haemorrhages may take up to 3 weeks to disappear

Is a Subconjunctival Haemorrhage Contagious?

No. It is not contagious and cannot be passed to others.

How to Feel Better and Recover Quickly

Self-Care at Home:

• No specific treatment is usually needed
• Artificial tears can relieve mild irritation
• Avoid rubbing the eye
• Protect eyes from further trauma

Treatment from a GP:

• Usually not required
• Investigation if haemorrhages are recurrent or associated with other symptoms

When Referral Is Needed:

• Recurrent haemorrhages
• Associated vision changes or pain
• Suspected underlying bleeding disorder or trauma

When to Seek Urgent Medical Help

Seek urgent medical attention in A&E or urgent care if:

• Vision changes or loss
• Eye pain or swelling
• Haemorrhage following significant trauma
• Recurrent or extensive bleeding

How Dr.Online UK Can Help

We offer:

• Same-day online GP appointments
• Assessment and reassurance for subconjunctival haemorrhage
• Advice on preventing recurrence
• Referral to ophthalmology if needed

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