In the classification of uveitis by the SUN (Standardization of Uveitis Nomenclature) Working Group, how is 'intermediate uveitis' anatomically defined?

• A Inflammation affecting both the anterior chamber and posterior pole equally
• B Inflammation primarily at the posterior pole including macula and optic disc
• C Inflammation predominantly in the anterior vitreous, vitreous base, pars plana, and peripheral retina ✓
• D Inflammation involving the entire uveal tract from ciliary body to choroid

Explanation

The SUN Working Group (2005) classifies uveitis anatomically: Anterior uveitis = anterior chamber; Intermediate uveitis = vitreous/pars plana/peripheral retina (previously called parsplanitis when idiopathic, though SUN 2021 update refined terminology); Posterior uveitis = retina or choroid; Panuveitis = all three segments. The hallmark of intermediate uveitis is snowball vitreous opacities and snowbanking (pars plana exudates). MS, sarcoidosis, and Lyme disease are important associations.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.