What type of lesion is characteristically associated with herpes keratitis?

Herpes keratitis is specifically associated with dendritic lesions. These lesions are unique, as they appear as branching or tree-like patterns on the cornea, which are indicative of the herpes simplex virus's effect on the corneal epithelium. This pattern is due to the way the virus affects the epithelial cells, leading to a characteristic presentation under slit-lamp examination.

Dendritic ulcers appear as fine, linear markings that can sometimes have elevated edges, giving them a distinctive appearance that differentiates them from other types of corneal lesions. Recognizing these lesions is crucial for diagnosing herpes keratitis, as they indicate the presence of viral replication in the cornea. Prompt identification and treatment are essential to prevent complications such as scarring or vision loss.

Other lesion types, such as macular, ulcerative, or follicular, do not have the same distinct appearance or association with herpes keratitis and thus are not relevant to this particular condition.