How does viral keratitis cause

The basic cause of viral keratitis is viral infection, excessive use of the eye, drug stimulation and other factors can induce the disease.

First, the basic cause of infection of

the virus, virus invasion of the cornea, and affected the trigeminal nerve, leading to corneal damage, inflammation, causing viral keratitis.

Second, induced factors

1, excessive use of the eye

If the eye is too long or in a dark environment, it can lead to eye fatigue, local immunity decline, the risk of viral keratitis is greater.

2, drug stimulation

Long-term use of glucocorticoids, immunosuppressive drugs, can affect the body immunity, leading to the body can not resist the invasion of the virus, causing the disease.