## **Core Concept**
Panuveitis is a form of uveitis that involves inflammation of all layers of the uvea, which is the pigmented part of the eye. The uvea consists of the iris, ciliary body, and choroid. Panuveitis affects the entire uveal tract, leading to a more complex and potentially severe clinical presentation.

## **Why the Correct Answer is Right**
The correct answer, , indicates that panuveitis involves all parts of the uveal tract. This means that the inflammation is not limited to the anterior segment (iritis), the intermediate segment (intermediate uveitis), or the posterior segment (choroiditis or retinitis), but rather affects all these areas simultaneously. This comprehensive involvement necessitates a thorough diagnostic and therapeutic approach.

## **Why Each Wrong Option is Incorrect**
- **Option A:** - This option is incorrect because it does not specify involvement of all uveal layers.
- **Option B:** - This option is incorrect because it implies a more limited form of uveitis.
- **Option C:** - This option is incorrect because it suggests a different, less extensive form of ocular inflammation.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that panuveitis can lead to significant complications, including vision loss, and may be associated with systemic diseases. Therefore, identifying and managing the underlying cause is crucial. Clinicians should consider a broad differential diagnosis, including infections, autoimmune disorders, and masquerade syndromes.

## **Correct Answer:** . All layers of the uvea.