Herpes and Vision
Yes — herpes can affect your vision.
Several types of herpes viruses can involve the eye, most commonly herpes simplex virus (HSV) and varicella-zoster virus (VZV, which causes chickenpox and shingles). When these viruses involve ocular tissues they can cause a range of problems from mild irritation to serious, vision‑threatening disease.
Key ways herpes can affect vision
Herpes simplex keratitis (HSV of the cornea)
Causes inflammation, pain, redness, tearing, light sensitivity, and blurred vision.
Can produce dendritic (branching) corneal ulcers visible on exam.
Recurrent episodes and scarring of the cornea can lead to permanent vision loss; severe cases may require corneal transplant.
Ocular herpes involving the eyelid and conjunctiva
Causes blisters or sores on the eyelids, conjunctival redness, and discharge.
May be painful and increase risk of secondary bacterial infection.
Herpes zoster ophthalmicus (VZV involvement of the eye)
Occurs when shingles affects the ophthalmic branch of the trigeminal nerve.
Signs include a painful, blistering rash on the forehead/upper eyelid, eye redness, keratitis, uveitis (inflammation inside the eye), and sometimes increased intraocular pressure.
Can cause long‑term complications such as scarring, chronic dry eye, glaucoma, and decreased vision.
Herpetic uveitis/retinitis (inflammation deeper in the eye)
Uveitis (inflammation of the iris, ciliary body, or choroid) can cause pain, photophobia, floaters, and vision loss.
Rarely, HSV or VZV can cause acute retinal necrosis, a rapidly progressing retinal infection that can lead to severe, permanent vision loss without urgent treatment.
Who’s at higher risk
People with weakened immune systems (HIV, chemotherapy, organ transplant recipients).
Older adults (especially for shingles-related eye disease).
Those with a history of ocular herpes or prior eye surgery/trauma.
Diagnosis and treatment
Diagnosis is clinical (exam by an eye specialist) and may be confirmed with eye swabs, PCR testing, or corneal staining.
Prompt antiviral therapy is critical: topical antivirals (e.g., trifluridine) and/or oral antivirals (acyclovir, valacyclovir, famciclovir) depending on site and severity.
Corticosteroids may be used under specialist supervision for some inflammatory complications but can worsen active viral infection if used incorrectly.
Pain control, lubricating eye drops, and treating elevated intraocular pressure may also be necessary.
Severe cases may require surgical interventions (e.g., corneal transplant, retinal surgery).
When to seek care
Any sudden eye pain, worsening redness, sudden drop in vision, new floaters, light sensitivity, or a rash near the eye warrants urgent evaluation by an eye doctor or emergency care.
Prevention and long‑term care
Early antiviral treatment reduces risk of complications.
For shingles, vaccination reduces the risk of herpes zoster and its eye complications.
People with recurrent ocular herpes may need suppressive antiviral therapy to reduce recurrences.
Regular follow‑up with an ophthalmologist if you’ve had ocular herpes is important to monitor for late complications.
Bottom line: Herpes viruses can and do affect the eye. Left untreated, ocular herpes can cause lasting vision damage, so early recognition and specialist care are essential to preserve vision and reduce long‑term complications.
