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Related Experiment Video

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Primed Mycobacterial Uveitis (PMU) as a Model for Post-Infectious Uveitis

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Intermediate uveitis.

B Manohar Babu¹, S R Rathinam

¹Uvea Clinic, Aravind Eye Hospital, Coimbatore, India.

Indian Journal of Ophthalmology

|December 24, 2009

Summary

Intermediate uveitis (IU) involves inflammation primarily in the vitreous. Pars planitis is a specific type of IU without systemic causes, characterized by "snowballs" or "snowbanks." This review covers IU's features, causes, and treatments.

Area of Science:

Ophthalmology
Immunology

Background:

Intermediate uveitis (IU) is defined as inflammation affecting the anterior vitreous, ciliary body, and peripheral retina.
The Standardization of Uveitis Nomenclature (SUN) working group recommends using "intermediate uveitis" for cases where the vitreous is the primary inflammation site, especially with associated infections or systemic diseases.
Pars planitis is a subtype of IU specifically for idiopathic cases exhibiting "snow banks" or "snowballs" without systemic involvement.

Purpose of the Study:

To discuss the clinical features, etiology, pathogenesis, diagnostic investigations, and treatment options for intermediate uveitis.

Main Methods:

Literature review and consensus-based definitions from the SUN working group.

Main Results:

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Established clear diagnostic criteria differentiating intermediate uveitis from pars planitis based on the presence of systemic associations and characteristic clinical findings.

Defined the vitreous as the major site of inflammation for classifying intermediate uveitis.

Conclusions:

Accurate classification of intermediate uveitis, including distinguishing it from pars planitis, is crucial for appropriate management.
Understanding the etiology and pathogenesis is key to developing effective treatment strategies for intermediate uveitis.