Can orbital cellulitis come from a sinus infection?

Yes. Sinus infection is a common source, especially in children [1] .

How do doctors tell it apart from preseptal cellulitis?

They check eye movement, vision, pupils, pain, and whether the eye is pushed forward. Imaging may be needed.

Will eye drops treat orbital cellulitis?

No. Drops do not reach the deep eye socket well. Treatment usually needs antibiotics through a vein.

Can orbital cellulitis damage vision?

Yes. Swelling or an abscess can harm the optic nerve. Fast treatment lowers that risk.

Condition

Orbital Cellulitis

Also known as Postseptal Cellulitis, Eye Socket Infection, Orbital Infection, Cellulitis Behind the Eye

Updated May 16, 2026·For educational purposes only. Not a substitute for medical advice. See our terms.

Bottom Line

Orbital cellulitis is a serious infection behind the eyelid. It can threaten sight or spread to the brain, so fever, bulging eye, double vision, or pain with eye movement needs emergency care.

Orbital cellulitis is an infection of the fat and muscles inside the eye socket. It is usually bacterial and often starts from a sinus infection ¹.

The key warning signs are swollen eyelids, fever, a bulging eye, double vision, pain with eye movement, or reduced vision. These signs separate orbital cellulitis from milder preseptal cellulitis ².

Treatment usually needs emergency evaluation, imaging, and intravenous antibiotics. Some people also need surgery to drain an abscess or infected sinus ³.

Symptoms and Warning Signs

Orbital cellulitis usually affects one eye. Symptoms can build over hours or days.

Red, swollen eyelids. The lid may feel warm and tight.
Pain with eye movement. This is a key danger sign.
Bulging eye. The eye may look pushed forward.
Double vision. Eye muscles may not move normally.
Fever or chills. This suggests a deeper infection.
Lower vision or color change. This can mean optic nerve stress.

Go to the emergency room now for pain with eye movement, bulging eye, double vision, sudden vision loss, or fever with fast eyelid swelling.

Diagnosis and Treatment

Doctors check vision, pupils, eye movement, color vision, and the eyelids. A computed tomography (CT) scan or magnetic resonance imaging (MRI) scan may look for sinus disease or an abscess.

Treatment usually starts in the hospital. Intravenous antibiotics treat the infection through a vein. Ear, nose, throat, and eye surgeons may work together if sinus drainage or abscess drainage is needed ³.

Do not try to treat possible orbital cellulitis with leftover drops or home care. Delayed treatment can risk permanent vision loss.

Preseptal vs. Orbital Cellulitis

Preseptal cellulitis stays in the eyelid tissue in front of the orbital septum. The orbital septum is a thin sheet that separates the eyelid from the eye socket.

Orbital cellulitis is behind that sheet. It can affect eye muscles, fat, blood vessels, and the optic nerve. Pain with eye movement, bulging eye, double vision, and vision loss point toward orbital disease ⁵.

Common Questions About Orbital Cellulitis

Yes. Orbital cellulitis can threaten sight and can spread beyond the eye socket. Go to the emergency room for warning signs.

Next Steps

1Go to the emergency room now for pain with eye movement, bulging eye, double vision, fever, or vision loss.
2Tell the emergency team about any recent sinus infection, surgery, injury, bite, or skin wound.
3Bring a medicine list and allergy list if you can do so without delay.
4Do not start leftover antibiotics or steroid drops unless a doctor tells you to.

Find specialists for Orbital Cellulitis

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