Scleritis: Causes, Symptoms, and When to Seek Treatment

Causes of Scleritis

Scleritis happens when the white layer of the eye becomes inflamed for many reasons.

Scleritis often happens when the body’s defense system attacks the white of the eye. Conditions like rheumatoid arthritis, lupus, and vasculitis are common autoimmune causes linked to this inflammation. These diseases can trigger ongoing immune reactions that target healthy eye tissues. Working with a rheumatologist helps find and treat these underlying conditions early.

Germs such as bacteria, fungi, and viruses can infect the sclera and lead to scleritis. Common culprits include Pseudomonas aeruginosa, Staphylococcus species, Aspergillus, Fusarium, and herpes viruses. Infection-related scleritis may follow eye surgery, injury, or spread from nearby tissue. Prompt lab tests and targeted medicine are vital to clear the infection and prevent damage.

Eye surgeries like cataract removal and pterygium surgery can trigger inflammation in rare cases. Injuries from blunt blows or sharp objects may also damage the sclera and cause scleritis. Postoperative monitoring and protective eyewear reduce the risk of inflammation after injury or surgery. Reporting any new pain or redness after a procedure helps your doctor act quickly.

Some medicines, especially bone-strengthening drugs called bisphosphonates, have been linked to rare cases of scleral inflammation. Other medications may also trigger immune reactions or increase infection risk in the eye. A full review of all prescription and over-the-counter drugs helps pinpoint unusual causes. Always share your medication list with your eye doctor before starting treatment.

About half of scleritis cases have no clear cause and are called idiopathic. Even when no trigger is found, an eye specialist will perform tests to rule out hidden autoimmune or infectious disease. Idiopathic scleritis still needs treatment to control inflammation and protect vision. Regular follow-up helps catch any new signs of systemic disease over time.

Types of Scleritis

Types of Scleritis

Doctors group scleritis by where the inflammation is in the sclera and how it looks. Knowing the type helps pick the right tests and treatment.

This form causes even redness and tenderness across a broad front-sclera area. Patients often feel a constant, dull ache that worsens with eye movement or pressure. The sclera looks uniformly red and swollen without distinct lumps. Early NSAIDs or steroids can ease inflammation if started quickly.

Small, tender bumps or nodules form on the visible white of the eye in this type. These focal areas of inflammation may precede more severe disease forms. Nodules often feel firm but painful to touch, and redness surrounds each bump. Immunosuppressive therapy may be needed if nodules persist or worsen.

Necrotizing scleritis is the most serious form and can thin or break down the scleral wall. Tissue destruction may lead to permanent defects or perforation if not treated urgently. Strong immunosuppressive drugs or surgical support, such as scleral patch grafts, are often required. Close monitoring by an ophthalmologist and rheumatologist is critical to prevent vision loss.

Posterior scleritis affects the back of the eye and often causes deep pain around the eye or temple without obvious redness. It may present with swelling behind the eye, blurry vision, and even double vision. Imaging tests like B-scan ultrasound and OCT are used to detect hidden inflammation. Early detection guides prompt treatment to protect the optic nerve and retina.

Symptoms of Scleritis

Symptoms of Scleritis

The main signs of scleritis are deep pain and red or purple eye color. Other symptoms can help tell it apart from milder eye inflammation.

Pain from scleritis is often described as deep, dull, or throbbing and may spread to the face, jaw, or temple. Moving the eye or lying down often makes the pain worse. Pain can disrupt sleep and daily activities, signaling the need for prompt care. Early treatment helps ease discomfort and prevent worsening inflammation.

Inflamed deep vessels give the sclera a pink, red, or violet hue that does not blanch with cold drops. This deep coloration distinguishes scleritis from surface redness in conjunctivitis or episcleritis. The color change often covers a large area in diffuse forms or surrounds nodules in focal forms. Noticing this violaceous tint early can speed up diagnosis and treatment.

Bright light often triggers watering and intense discomfort for people with scleritis. Patients may shield their eyes or prefer dim lighting to reduce pain. Photophobia can make reading, driving, or screen use difficult. Managing light exposure and using protective eyewear can help ease symptoms between treatments.

Excess tearing is common in scleritis, while thick discharge usually appears only if an infection is present. Any unusual discharge, especially yellow or green, should be reported immediately. Keeping a record of symptoms helps doctors tailor treatment and detect infection early. Using preservative-free artificial tears can soothe dryness and reduce irritation.

Swelling or spread of inflammation to nearby structures like the cornea and uvea can blur vision. Persistent or worsening vision changes require urgent evaluation by an eye specialist. Blurry vision may improve with successful treatment of the underlying inflammation. Regular vision testing helps track treatment response and guide adjustments.

Diagnosing Scleritis

To diagnose scleritis, doctors use a detailed eye exam and special tests to see how deep and wide the inflammation is. Early diagnosis helps prevent complications and target treatment correctly.

Your doctor will examine the eye under a slit lamp to look for deep vessel injection, nodules, or thinning of the sclera. Checking the cornea and anterior chamber also rules out related issues like uveitis or keratitis. Taking a full medical history helps identify systemic diseases linked to scleritis. A thorough exam guides the choice of lab tests and imaging needed.

A slit-lamp microscope provides a magnified, detailed view of the sclera and adjacent tissues. It helps measure how deep the inflammation goes and detect early tissue damage. The doctor can apply mild pressure to see how vessels respond and distinguish scleritis from episcleritis. Findings under the slit lamp are key to confirming the diagnosis.

Ultrasound B-scan shows fluid in Tenon’s capsule, confirming posterior scleritis and hidden inflammation. Optical coherence tomography (OCT) measures scleral thickness and reveals subtle swelling. These imaging methods help distinguish scleritis from other eye diseases with similar symptoms. Imaging also tracks treatment response over time to guide adjustments.

Blood tests check for autoimmune markers like rheumatoid factor, ANA, and ANCA, as well as inflammation markers such as ESR and CRP. Identifying an underlying autoimmune disease helps guide long-term management and prevent flare-ups. Infectious serologies and cultures may be done if infection is suspected. Working with a rheumatologist or infectious disease specialist ensures comprehensive care.

Treating Scleritis

Treating Scleritis

Treatment for scleritis aims to ease pain, control inflammation, and protect vision. The plan depends on the cause and type of scleritis in each patient.

Mild diffuse scleritis often improves with oral NSAIDs like ibuprofen or indomethacin. Patients should watch for stomach upset and take these medicines with food. Your doctor may switch to a selective COX-2 inhibitor if GI side effects occur. Regular blood tests check kidney function during NSAID therapy.

Moderate to severe scleritis often requires oral or injectable steroids such as prednisone. Treatment usually starts with high doses that taper gradually over weeks or months to prevent relapse. Doctors monitor for side effects like high eye pressure, weight gain, and mood changes. Steroid treatment may be combined with other medications to minimize long-term risks.

For necrotizing scleritis or cases tied to autoimmune disease, drugs like methotrexate, mycophenolate, or cyclophosphamide are used. These agents help control immune activity when steroids alone are not enough. Regular lab tests check blood counts and liver function during therapy. A rheumatologist often co-manages treatment to optimize dosing and monitor side effects.

Newer biologic drugs such as rituximab and adalimumab target specific parts of the immune system. Biologics are often used when conventional immunosuppressants fail or cause toxicity. Patients receive these by infusion or injection under specialist care. Biologic therapy can reduce flare-ups and spare steroid use over time.

If an infection causes scleritis, the doctor prescribes antibiotics, antifungals, or antivirals based on lab tests. Initial broad-spectrum treatment is refined once culture results return. Severe infections may need surgical cleaning of dead tissue to clear germs. Prompt antimicrobial care prevents spread and protects vision.

When the sclera becomes thin or starts to perforate, surgery like a scleral patch graft can repair the damage. Corneal or oculoplastic surgeons often assist to support the eye’s structure. Surgery may be combined with immunosuppressive therapy for best results. Close postoperative follow-up ensures healing and prevents recurrence.

Wearing protective eyewear during activities reduces the risk of injury-triggered inflammation. Managing underlying autoimmune disease through regular care lowers the chance of flare-ups. Using preservative-free artificial tears soothes irritation between treatments. Routine eye exams help detect early signs of recurrence and adjust therapy promptly.

Complications of Scleritis

Complications of Scleritis

If scleritis is not treated effectively, it can lead to serious eye damage and affect overall health. Knowing the possible complications helps in quick action to avoid lasting harm.

Inflammation spreading to the cornea, uvea, or retina can cause permanent vision loss. Early and aggressive treatment reduces this risk of lasting damage. Regular vision testing during and after treatment tracks recovery. Quick action at the first sign of vision change is essential.

Severe necrotizing scleritis can wear away the eye wall and risk globe rupture. Urgent surgical repair is needed to save vision and the eye’s shape. Patch grafts or tissue reinforcement help restore strength to the sclera. Close follow-up detects early signs of thinning and guides preventive care.

Scleritis can spread inward, causing inflammation of the uvea or peripheral cornea. This can make treatment more complex and pain more severe. Combined therapy with topical drops and systemic medicine is often used. Monitoring for corneal ulcers and eye pressure changes is critical.

Long-term steroid use can raise eye pressure and lead to glaucoma or cataracts. Other side effects include weight gain, mood swings, bone thinning, and high blood sugar. Doctors aim to minimize steroid exposure by adding steroid-sparing agents. Regular health checks monitor for adverse effects during treatment.

Frequently Asked Questions

Frequently Asked Questions

Episcleritis is a mild swelling of a thin layer over the sclera and causes slight redness and discomfort. Scleritis involves deeper tissue, causes intense pain, and can threaten vision if untreated.

Treatment time depends on the cause and severity of scleritis. Mild cases may improve in a few weeks with NSAIDs, while autoimmune forms often need months of medication and follow-up.

Recurrences are common, especially with autoimmune disease. Long-term follow-up and maintenance therapy help reduce flare-ups.

Treatment should start as soon as scleritis is diagnosed to prevent complications. Early use of anti-inflammatory or antimicrobial medicine leads to better outcomes.

  • Manage autoimmune diseases through regular care and checkups.
  • Attend routine eye exams for early detection of inflammation.
  • Wear protective eyewear during activities that risk eye injury.

When linked to systemic disease, scleritis may occur with joint pain, skin rashes, or organ issues. Working with a rheumatologist can help manage related health problems.

Contact Our Ophthalmologists

Contact Our Ophthalmologists

Our ophthalmologists at ReFocus Eye Health Cheshire are here to answer your questions about scleritis and guide your care.

Contact Us

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