**Core Concept**
Pars planitis is a form of intermediate uveitis characterized by inflammation of the pars plana, a region between the ciliary body and the choroid in the eye. This condition is often associated with systemic diseases and can lead to complications such as cataract formation and retinal detachment.

**Why the Correct Answer is Right**
Pars planitis is a type of non-granulomatous uveitis, which means it does not form granulomas, a type of inflammatory lesion. The condition is typically bilateral and affects individuals between the ages of 20 and 40. The exact cause of pars planitis is unknown, but it is often associated with autoimmune disorders such as multiple sclerosis and sarcoidosis. The inflammation in pars planitis can lead to the formation of inflammatory cells and proteins in the vitreous humor, which can cause vision loss.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the location of the inflammation in the eye, which is a key characteristic of pars planitis.
**Option B:** This option is incorrect because it refers to a different type of uveitis that affects the anterior chamber of the eye, not the pars plana.
**Option C:** This option is incorrect because it refers to a type of uveitis that affects the posterior segment of the eye, not the pars plana.

**Clinical Pearl / High-Yield Fact**
Pars planitis is often associated with systemic diseases, so it is essential to consider the patient's overall medical history when diagnosing this condition. A thorough examination of the eye, including a slit-lamp examination and imaging studies, is necessary to confirm the diagnosis.

**Correct Answer:** D.