Herpes simplex virus keratitis is the most common type of viral infection.

Herpes simplex keratitis can be diagnosed by slit lamp examination, corneal scraping examination, immunofluorescence staining examination, etc.

1. slit lamp examination

When the doctor uses slit lamp to observe the corneal tissue stained with fluorescein sodium, if dendritic or cartographic corneal ulcer lesions are found, the existence of herpes simplex keratitis can be preliminarily judged.

2. corneal scraping examination When the

patient performs corneal scraping examination, if the doctor isolates herpes simplex virus from its corneal tissue, the patient can be diagnosed with herpes simplex keratitis.

3. immunofluorescence staining examination When the

patient performs immunofluorescence staining examination, if the antibody labeled with fluorescein binds to the corresponding antigen in the body, the doctor finds antigen-antibody complex under fluorescence microscope, and the pathogen can be identified and localized.