Eye herpes (also called herpes simplex keratitis) may not be as well-known as other eye conditions, but it’s more common—and more serious—than many people realize. Caused primarily by the Herpes simplex virus type 1 (HSV-1)—the same virus behind cold sores (though occassionally by HSV-2 or the Herpes zoster virus), this infection can lead to recurring discomfort, blurry vision, and long-term damage if not treated promptly. Understanding the risks, symptoms, and treatment options is essential for protecting your eyesight and staying ahead of flare-ups.
Our experienced and professional eye care team discusses more below.
How Herpes Simplex Virus in the Eye Can Affect Your Vision
Herpes virus enters the eye via contact—such as touching a cold sore and then the eye—and may lie dormant in your nervous system for many years before reactivating. Without prompt care, it can threaten vision. The virus may affect multiple structures of the eye including:
- Eyelids and lash margins
- The cornea (front clear layer)
- The conjunctiva (white of the eye and inner eyelid)
- Occasionally the iris, sclera, or retina
Symptoms of a "cold sore in the eye" often include:
- Redness, tearing, irritation
- Feeling like something is stuck in your eye
- Sensitivity to light, blurry or reduced vision
- Swollen lymph nodes near the ear, eyelid blisters or rash
Because it can mimic a standard “pink eye,” mis-treatment happens frequently—so seeing a specialist matters.
What Triggers a Flare-Up?
Although you may have contracted the virus years ago, certain triggers can prompt an outbreak:
- Emotional stress
- UV (sun) exposure
- Fever, illness, surgery (including LASIK or dental)
- Trauma to the eye or surrounding area
- A weakened immune system
Prevention & Smart Practices
While you can’t guarantee you’ll never have another outbreak, you can reduce your risk:
- Wash hands thoroughly, avoid touching eyes especially during a cold-sore episode
- Follow strict hygiene if you wear contact lenses—never swim or sleep in them without proper care
- Protect your eyes outdoors with UV-blocking sunglasses
- If you’ve had a prior ocular HSV event, work with your eye doctor on monitoring and possibly preventive antiviral therapy
Is Herpes in the Eye Contagious?
Yes — eye herpes is contagious, especially during an active outbreak. The virus can spread through direct contact with eye secretions, saliva, or by touching a cold sore and then your eye. It’s important to avoid sharing towels, cosmetics, or contact lenses, and to wash your hands frequently if you or someone close to you has an active infection. Once the virus is inside the body, it can reactivate later, even without new exposure.
Treatment: Why Timing Matters
There’s no “cure” to erase the virus entirely—but with early diagnosis and prompt treatment, you can protect your vision and limit recurrence.
If treated within 72 hours, outcomes are significantly better.
Typical treatments may include:
- Antiviral eye drops or ointments
- Oral antiviral medications
- Close monitoring of the cornea for ulcers or scarring
- Preventive strategies for frequent flare-ups (e.g., daily antivirals)
Why Choose Paradise Valley Eye Care?
Situated in North Phoenix, we serve the Phoenix, Paradise Valley, and Scottsdale communities with an emphasis on care for all ages—from first eye exam to advanced ocular disease.
Given our local demographic (high-income, well-educated, mature professionals and families), we tailor care with the latest diagnostics, personal attention, and premium patient experience.
If you experience redness, irritation, or changes in vision—and particularly if you’ve had a cold sore or prior HSV event—don’t wait. Protect your sight with timely expert care.
Ready to Schedule Your Eye Care Appointment?
If you suspect an ocular HSV infection—or simply want a comprehensive eye exam to ensure your eyes are healthy—call us today or schedule your visit online.
Early evaluation means better outcomes, and in an area where eye care standards are high, you deserve nothing less.