Hypopyon
Hypopyon is a medical condition involving inflammatory cells in the anterior chamber of the eye.
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It is an exudate rich in white blood cells seen in the anterior chamber.
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It is an exudate rich in white blood cells , seen in the anterior chamber
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It is a sign of inflammation of the anterior uvea and iris (iritis).
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It is a sign of inflammation of the anterior uvea and iris , i.e. iritis
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The exudate settles at the dependent aspect of the eye due to gravity.
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The exudate settles at the dependent aspect of the eye due to gravity.
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It is also known as sterile pus because it occurs due to the release of toxins and not by the actual invasion of pathogens.
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Hypopyon is also known as sterile pus because it occurs due to the release of toxins and not by the actual invasion of pathogens.
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Common causes include a foreign body or corneal abrasion, which may be followed by bacterial or viral infection.
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Common causes include a foreign body or corneal abrasion, which may be followed by bacterial or viral infection.
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It is usually accompanied by redness of the conjunctiva and the underlying episclera.
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usually accompanied by redness of the conjunctiva and the underlying episclera
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It can be present in a corneal ulcer.
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Hypopyon can be present in a corneal ulcer .
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It can occur as a result of Behçet's disease, endophthalmitis, panuveitis / panophthalmitis, or adverse reactions to some drugs.
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It can occur as a result of Behçet's disease , endophthalmitis , panuveitis / panophthalmitis , or adverse reactions to some drugs
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Inverse hypopyon is seen after a pars plana vitrectomy with an insertion of silicone oil.
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Inverse hypopyon is seen after a pars plana vitrectomy with an insertion of silicone oil
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A hypopyon should not be drained because it offers protection against the invading pathogen.
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A hypopyon should not be drained, because it offers protection against the invading pathogen due to the presence of white blood cells
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Intravitreal antibiotics can be used if endophthalmitis is suspected.
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Intravitreal antibiotics can be used if endophthalmitis is suspected.
Long-standing hypopyon can cause close-angle glaucoma and anterior synechiae.
| Hypopyon | |
|---|---|
| Slit lamp view of hypopyon | |
| Specialty | Ophthalmology |
Hypopyon is a medical condition involving inflammatory cells in the anterior chamber of the eye.
It is an exudate rich in white blood cells, seen in the anterior chamber, usually accompanied by redness of the conjunctiva and the underlying episclera. It is a sign of inflammation of the anterior uvea and iris, i.e. iritis, which is a form of anterior uveitis. The exudate settles at the dependent aspect of the eye due to gravity. It can be sterile (in bacterial corneal ulcer) or not sterile (fungal corneal ulcer).
Common causes include a foreign body or corneal abrasion, which may be followed by bacterial or viral infection. It may also result from conjunctivitis, uveitis, scleritis, ectropion, photokeratitis, onchocerciasis, Behçet's disease and others.[1][2]
Differential diagnosis
Hypopyon can be present in a corneal ulcer. It can occur as a result of Behçet's disease, endophthalmitis, panuveitis/panophthalmitis, or adverse reactions to some drugs (such as rifabutin).[3]
Hypopyon is also known as sterile pus because it occurs due to the release of toxins and not by the actual invasion of pathogens. The toxins secreted by the pathogens mediate the outpouring of leukocytes that settle in the anterior chamber of the eye.
An inverse hypopyon is different from a standard hypopyon. Inverse hypopyon is seen after a pars plana vitrectomy with an insertion of silicone oil (as a replacement of the vitreous humour that has been removed in the operation; the silicone oil maintains internal tamponade). When the silicone oil emulsifies, it seeps into the anterior chamber and settles at the top of the anterior chamber. This is in contrast to hypopyon resulting from toxins where the leukocytes settle at the bottom of the anterior chamber. This is due to the effect of gravity, hence the name inverse hypopyon.
- ↑ "hypopyon". Puls.bg. Retrieved 8 March 2026.
- ↑ "Хипопион". Framar.bg. Retrieved 8 March 2026.
- ↑ Huang, John H.; Gaudio, Paul A., eds. (2010). "Hypopyon". Ocular Inflammatory Disease and Uveitis: Diagnosis and Treatment. Lippincott Williams & Wilkins. p. 204. ISBN 9780781798365.
- ↑ "Narrow-Angle Glaucoma". allaboutvision.com. Retrieved 16 November 2016.
- ↑ "Peripheral Anterior Synechia Treatment & Management: Medical Care, Surgical Care, Consultations". emedicine.medscape.com. 18 October 2016. Retrieved 16 November 2016.