Cat FHV Corneal Disease: Chronic Welfare Impact

Feline herpesvirus-1 causes recurrent corneal disease in cats that causes chronic discomfort and potential vision loss requiring long-term management.

Key Facts

FHV-1 infects the majority of cats and establishes lifelong latent infection in trigeminal ganglia
Stress and immunosuppression trigger viral reactivation causing recurrent corneal ulcers and conjunctivitis
Corneal sequestrum, a dark necrotic plaque, develops in some chronically affected cats
Antiviral therapy with famciclovir and topical agents reduces severity and frequency of outbreaks
L-lysine supplementation was once widely used but evidence of benefit is now considered insufficient

Welfare Considerations

Recurrent FHV-1 corneal disease causes persistent ocular pain, discharge, and visual impairment that meaningfully reduces quality of life. Cats often rub or squint affected eyes, demonstrate reduced activity, and lose appetite during acute episodes. The chronic, relapsing nature means affected cats experience repeated bouts of discomfort throughout their lives. Stress management to minimize reactivation is a core welfare intervention, including stable social environments, consistent routines, and multicat household management. Surgical removal of corneal sequestra when present provides lasting relief from the associated inflammation and discomfort.

What You Can Do

Minimize stress triggers in households with cats known to have recurrent FHV-1 disease
Discuss antiviral medication options with your vet for cats with frequent severe outbreaks
Provide consistent daily routines and stable social environments to support immune management
Seek ophthalmologist referral for cats with corneal sequestrum or vision-threatening disease