Endophthalmitis: Symptoms, Causes, Diagnosis and Treatment

Written by Medicover Team and Medically Reviewed by Dr Vompolu Kamakshi Bhaskar , Ophthalmologists

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Endophthalmitis is a severe and potentially sight-threatening inflammation of the interior of the eye, typically caused by infection. This condition requires immediate medical attention to prevent permanent vision loss. Understanding the causes, symptoms, diagnosis, and treatment options of endophthalmitis is crucial for anyone at risk or involved in eye care.

What are the Types of Endophthalmitis?

Endophthalmitis is classified based on how the infection enters the eye.

Exogenous Endophthalmitis

This is the most common type and occurs when microorganisms enter the eye following surgery, trauma, or intraocular injections.

Occurs after eye surgery or injury
Most common form of endophthalmitis
Requires urgent treatment

Endogenous Endophthalmitis

This type develops when microorganisms spread through the bloodstream from an infection elsewhere in the body to the eye.

Results from bloodstream infection
Often affects individuals with weakened immune systems
May involve one or both eyes

What are the Symptoms of Endophthalmitis?

Recognizing the symptoms of endophthalmitis is critical for timely diagnosis and treatment. Symptoms may vary depending on whether the condition is acute or chronic.

Common Symptoms

Severe Eye Pain: Often a hallmark of acute cases.
Redness: Generalized or localized to the area around the eye.
Blurred Vision: Can range from mild to profound vision loss.
Photophobia: Sensitivity to light.
Swelling of the Eyelids: May accompany the inflammation.
Hypopyon: The presence of white blood cells in the anterior chamber of the eye, visible as a white layer.

What are the Causes of Endophthalmitis?

Endophthalmitis can result from various causes, most commonly categorized into exogenous and endogenous sources.

Exogenous Endophthalmitis

Exogenous endophthalmitis occurs when an infectious agent enters the eye from an external source. Common causes include:

Postoperative Infections: Occurring after eye surgeries such as cataract extraction, glaucoma surgery, or vitrectomy.
Post-Traumatic Infections: Following penetrating eye injuries.
Intravitreal Injections: Used for treating retinal conditions, which can introduce pathogens into the eye.

Endogenous Endophthalmitis

Endogenous endophthalmitis arises when an infection from elsewhere in the body spreads to the eye via the bloodstream. It is often associated with systemic conditions like diabetes, immunosuppression, or intravenous drug use.

When to See a Doctor for Endophthalmitis?

Anyone with severe eye pain, redness, blurred vision, or swelling following eye surgery, an eye injection, or eye injury should seek immediate evaluation by an Ophthalmologist.

You should see a doctor immediately if you experience:

Sudden decrease in vision
Severe eye pain and redness
Increasing swelling after eye surgery or injury

Seek emergency medical attention immediately if you:

Lose vision suddenly
Develop severe eye pain with pus inside the eye
Experience symptoms after recent eye surgery or penetrating eye trauma

These symptoms may indicate sight-threatening infection requiring immediate emergency treatment.

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How Is Endophthalmitis Diagnosed?

Timely and accurate diagnosis is essential for managing endophthalmitis. Diagnostic procedures include:

Clinical Examination

A comprehensive eye examination by an ophthalmologist is the first step. This includes assessing visual acuity, intraocular pressure, and a detailed slit-lamp examination to identify signs of inflammation and infection.

Laboratory Tests

Aqueous and Vitreous Samples: Obtained via anterior chamber paracentesis or vitreous tap to identify the causative organism.
Gram Stain and Culture: Essential for detecting bacterial or fungal pathogens.
Polymerase Chain Reaction (PCR): For rapid and precise identification of infectious agents, particularly in culture-negative cases.

Imaging Studies

Ultrasound B-scan: Useful for evaluating the posterior segment of the eye, especially when media opacities hinder direct visualization.

What are the Treatment Options for Endophthalmitis?

Immediate treatment is crucial for preserving vision and eradicating the infection. Treatment strategies include:

Intravitreal Injections

Administering antibiotics or antifungal agents directly into the vitreous cavity is the cornerstone of endophthalmitis treatment. Commonly used drugs include:

Vancomycin: Effective against gram-positive bacteria.
Ceftazidime: Targets gram-negative bacteria.
Amphotericin B or Voriconazole: For fungal infections.

Systemic Antibiotics

In cases of severe infection or when endogenous endophthalmitis is suspected, systemic antibiotics may be necessary to manage the infection.

Vitrectomy

A surgical procedure called pars plana vitrectomy may be required, particularly in severe or unresponsive cases. This involves removing the vitreous humor and replacing it with a sterile solution. Vitrectomy helps to:

Reduce the Infectious Load: By removing infected vitreous gel.
Improve Drug Penetration: By allowing better access for intravitreal antibiotics.
Clear Media Opacities: Improving visualization and assessment of the retina.

Supportive Care

Topical Antibiotics and Steroids: To control surface infection and inflammation.
Pain Management: Using analgesics to alleviate severe pain.

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What are the Risk Factors for Endophthalmitis?

Certain factors increase the risk of developing endophthalmitis, including:

Surgical Procedures

Cataract Surgery: The most common cause of postoperative endophthalmitis.
Glaucoma and Vitreoretinal Surgery: Also associated with increased risk.

Medical Conditions

Diabetes Mellitus: Impairs immune response, increasing susceptibility to infections.
Immunosuppression: Due to medications or systemic conditions.

Trauma

Penetrating Eye Injuries: Create direct entry points for pathogens.

Intravitreal Injections

Frequent Injections: For conditions like age-related macular degeneration (AMD) or diabetic retinopathy.

How can Endophthalmitis be Prevented?

Preventing endophthalmitis involves meticulous surgical techniques and adherence to aseptic protocols. Key preventive measures include:

Preoperative and Intraoperative Measures

Povidone-Iodine Prep: Applying iodine solution to the conjunctiva and periocular skin before surgery.
Sterile Techniques: Maintaining a sterile environment and using sterile instruments.

Postoperative Care

Antibiotic Prophylaxis: Topical or systemic antibiotics may be used postoperatively.
Close Monitoring: Regular follow-up visits to detect and manage any early signs of infection.

What Is the Recovery Process for Endophthalmitis?

Recovery depends on early diagnosis and timely treatment. Ongoing care is important to preserve vision and prevent complications.

Regular follow-up with an ophthalmologist
Strict adherence to medications
Monitoring for vision changes
Post-surgical care if vitrectomy is performed
Managing underlying health conditions

Frequently Asked Questions

1. How is Endophthalmitis diagnosed?

Diagnosis typically involves a comprehensive eye examination, slit-lamp examination, ultrasound of the eye, and collection of vitreous or aqueous fluid samples for laboratory analysis.

2. Who is at risk of developing Endophthalmitis?

People who have recently undergone eye surgery, sustained an eye injury, received intraocular injections, or have bloodstream infections or weakened immune systems are at higher risk.

3. How is Endophthalmitis treated?

Treatment usually includes immediate intravitreal antibiotics or antifungal medications, systemic medications in selected cases, and vitrectomy surgery for severe infections.

4. Is Endophthalmitis a medical emergency?

Yes, Endophthalmitis is an ophthalmic emergency that requires immediate treatment to reduce the risk of permanent vision loss.

5. What complications can occur with Endophthalmitis?

Complications may include permanent vision loss, retinal detachment, glaucoma, cataracts, scarring inside the eye, and, in severe cases, loss of the eye.

6. Can Endophthalmitis be prevented?

The risk can be reduced by following sterile techniques during eye surgery and injections, promptly treating eye injuries, maintaining good eye hygiene, and using prescribed postoperative medications as directed.

7. What is the prognosis for Endophthalmitis?

The prognosis depends on the cause, severity of the infection, and how quickly treatment begins. Early diagnosis and prompt treatment significantly improve the chances of preserving vision.

8. Can Endophthalmitis occur after cataract surgery?

Yes, although it is rare, Endophthalmitis is a recognized complication of cataract surgery and other intraocular procedures. Prompt evaluation of any postoperative eye pain or vision changes is essential.