The INCORRECT Statement is B
Statement B is incorrect because it reverses the symptom severity between anterior and posterior uveitis—anterior uveitis typically presents with redness, pain, and photophobia, while posterior uveitis often has milder or absent external symptoms.
Analysis of Each Statement
Statement A: Usually immunological; rarely infectious or neoplastic
This is CORRECT. Anterior uveitis in a 17-year-old is predominantly immunological in origin 1. The evidence confirms that anterior uveitis is most commonly associated with immune-mediated conditions, particularly in the context of inflammatory bowel disease and seronegative spondyloarthropathies 1. While infectious causes exist (toxoplasmosis, herpes, tuberculosis account for 11-21% of all uveitis cases in high-income countries 2), they are less common than immunological etiologies in this age group.
Statement B: Redness, pain, photophobia, and vision loss in posterior uveitis
This is INCORRECT. The classical triad of redness, pain, and photophobia characterizes anterior uveitis, not posterior uveitis 1, 3, 4, 3. The evidence explicitly states: "Patients complain of a variety of symptoms including the classical features of uveitis: eye pain, blurred vision, photophobia, and headache" when describing anterior uveitis 1.
Critical distinction: Posterior uveitis is typically more insidious and often lacks the prominent external inflammatory signs. Patients with posterior uveitis may present primarily with floaters and blurred vision rather than the painful red eye seen in anterior disease 2.
Statement C: Unilateral or bilateral
This is CORRECT. Anterior uveitis can present as either unilateral or bilateral 1. The evidence notes that "when related to CD [Crohn's disease], uveitis is frequently bilateral, insidious in onset, and long-lasting" 1, but acute anterior uveitis (particularly HLA-B27 associated) is characteristically unilateral and alternating 3, 4, 5. The 2019 ACR guidelines specifically describe acute anterior uveitis as "episodic, unilateral" 3, 4, 3.
Statement D: Symptoms are milder in posterior uveitis
This is CORRECT. Posterior uveitis typically presents with milder external symptoms compared to anterior uveitis. While anterior uveitis causes prominent pain, redness, and photophobia 1, 3, posterior uveitis is often more subtle in presentation, with patients experiencing primarily visual symptoms like floaters and blurred vision rather than painful inflammatory signs 2. The evidence emphasizes that chronic anterior uveitis in JIA is "usually asymptomatic" 3, 4, 3, but when symptomatic anterior uveitis occurs (particularly acute anterior uveitis), it presents with severe external symptoms.
Statement E: Association with Crohn's disease or ankylosing spondylitis
This is CORRECT. The evidence strongly supports the association between anterior uveitis and both conditions 1, 6. The 2016 European consensus specifically addresses anterior uveitis as a common extra-intestinal manifestation of inflammatory bowel disease 1. HLA-B27-associated conditions including ankylosing spondylitis are well-established causes of acute anterior uveitis 3, 4, 3, 5.
Clinical Pitfall to Avoid
Do not assume all uveitis presents with a red, painful eye. Chronic anterior uveitis (particularly JIA-associated) can be asymptomatic despite active inflammation 3, 4, 3, while posterior uveitis rarely causes external inflammatory signs. This is why screening protocols exist for at-risk populations 3, 4.