Satellite lesion on cornea are seen in:
**Core Concept**
Satellite lesions on the cornea refer to small, discrete opacities that are associated with a larger central lesion, typically a dendritic ulcer caused by herpes simplex virus (HSV) infection. These lesions are a result of the virus's ability to spread from the central ulcer to adjacent corneal tissue.
**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of HSV infection. HSV-1 infects corneal epithelial cells, causing a dendritic ulcer. The virus can spread from the central ulcer to adjacent cells through the formation of new viral particles, which then infect adjacent corneal tissue, resulting in satellite lesions. This process is facilitated by the virus's ability to infect adjacent cells through direct cell-to-cell spread.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately describe the pathophysiology of satellite lesions on the cornea. While HSV can cause other types of corneal lesions, the formation of satellite lesions is specific to dendritic ulcers.
**Option B:** This option is incorrect as it does not accurately describe the pathophysiology of satellite lesions on the cornea. While HSV can cause other types of corneal lesions, the formation of satellite lesions is specific to dendritic ulcers.
**Option C:** This option is incorrect as it does not accurately describe the pathophysiology of satellite lesions on the cornea. While HSV can cause other types of corneal lesions, the formation of satellite lesions is specific to dendritic ulcers.
**Clinical Pearl / High-Yield Fact**
Satellite lesions on the cornea are a characteristic feature of dendritic ulcers caused by HSV infection. This is an important clinical correlation for doctors to recognize and diagnose HSV keratitis.
**Correct Answer: D. HSV (Herpes Simplex Virus) infection**