Shingles in the Eye: Symptoms, Causes, Treatment & Prevention

What are Shingles in the Eye?

Shingles in the eye, or ocular shingles (herpes zoster ophthalmicus, HZO), occurs when the varicella-zoster virus, responsible for chickenpox, reactivates, affecting the ophthalmic branch of the trigeminal nerve. Accounting for 10-20% of shingles cases, it can cause serious eye complications if not treated promptly.

While shingles can appear anywhere on the body, HZO specifically targets the ophthalmic branch of the trigeminal nerve. This nerve is responsible for supplying sensation to the forehead, scalp, upper eyelid, and the eye itself. Accounting for approximately 10-20% of all shingles cases, this condition is not just a skin rash; it is a medical emergency that requires immediate ophthalmic intervention to prevent permanent vision damage.

Causes and Risk Factors

The primary cause of shingles in the eye is reactivation of the varicella-zoster virus. Several factors increase the likelihood of this happening:

• Ageing: Immunity declines with age. Adults over 60 years are at the highest risk.
• Weakened immune system: Individuals with diabetes, HIV, cancer, autoimmune diseases, or those on chemotherapy, steroids, or immunosuppressive drugs are more vulnerable.
• Stress: Chronic physical or emotional stress can suppress immune function.
• Recent illness or trauma: Surgery or injury, especially near the face, may act as a trigger.
• History of chickenpox: Anyone who has had chickenpox carries the virus and is at risk.

Symptoms of Shingles in the Eye

Symptoms often develop in stages and typically affect one side of the face or eye.

Early (Prodromal) Symptoms

• Tingling, burning, itching, or shooting pain on the forehead, scalp, or around the eye
• Headache and fatigue
• Mild fever or general unwell feeling

Skin and Eye Symptoms

Within a few days, more noticeable signs appear:

• A painful red rash that evolves into fluid-filled blisters
• Blisters on the forehead, upper eyelid, nose (especially the tip), or scalp
• Swelling of the eyelids and surrounding tissues

Eye-Specific Symptoms

When the eye itself is involved, symptoms may include:

• Redness and inflammation
• Sensitivity to light (photophobia)
• Excessive tearing
• Blurred or reduced vision
• Eye pain or pressure
• In severe cases, partial or permanent vision loss

Tip: A rash on the tip of the nose (called Hutchinson's sign) often indicates a higher risk of eye involvement and requires urgent eye check up.

Who Is at Risk for Shingles in the Eye?

Certain factors increase the likelihood of developing ocular shingles. These include:

• Age: Older adults, especially those over 60, are more susceptible.
• Weakened immune system: Conditions like HIV, cancer, or immunosuppressive medications elevate risk.
• History of chickenpox: The virus can remain dormant for years and reactivate later in life.
• Stress or trauma: These factors can trigger the virus reactivation.

When to Seek Medical Attention?

It is crucial to seek medical care immediately if you notice symptoms of shingles in the eye, especially if you experience:

• Persistent pain or a rash near the eye.
• Swelling or redness that spreads quickly.
• Blurred or impaired vision.
• Sensitivity to light or unusual eye discomfort.

Prompt evaluation ensures proper treatment of shingles in the eye and reduces the risk of complications such as corneal scarring or vision loss.

Treatment of Shingles in the Eye

• Early intervention is necessary to prevent complications.
• Antiviral medications such as acyclovir, valacyclovir, or famciclovir help reduce the severity and duration of symptoms.
• Doctors prescribe steroid eye drops for significant inflammation.
• Pain management is a crucial part of treatment.
• Long-term antiviral therapy may be advised for frequent or severe outbreaks to prevent recurrence and offer a potential cure for shingles in the eye.

Prevention and Vaccination Tips

The Shingrix vaccine is recommended for adults aged 50 and older and for individuals aged 19 and over with weakened immune systems. Vaccination can significantly reduce the risk of developing shingles and its associated complications, including ocular shingles.

If you experience any symptoms of shingles near the eye, it's essential to consult an eye specialist promptly to initiate appropriate treatment and prevent potential vision loss.

Self-Care and Lifestyle Tips

• Maintain a strong immune system through a balanced diet and regular exercise.
• Avoid touching or scratching the rash to prevent infection.
• Protect your eyes by wearing sunglasses if light sensitivity occurs.
• Get vaccinated with the shingles vaccine to reduce the risk of developing shingles near eyes.