**Question:** Mainstay of treatment of uveitis -

A. Topical corticosteroids
B. Systemic corticosteroids
C. Intravitreal corticosteroids
D. Laser photocoagulation

**Core Concept:**
Uveitis refers to inflammation of the uvea, the middle layer of the eye that includes the iris, ciliary body, and choroid. It can be classified into various types based on etiology, location, and severity. Treatment options depend on the type of uveitis, its severity, and associated complications.

**Why the Correct Answer is Right:**
The mainstay of treatment for uveitis primarily involves suppressing inflammation and reducing ocular complications. Among the given options, topical corticosteroids are the first-line choice for mild to moderate anterior uveitis, as they have fewer systemic side effects compared to systemic corticosteroids. Systemic corticosteroids are reserved for severe cases where topical therapy alone is insufficient. Intravitreal corticosteroids are more commonly used in cases of chronic posterior uveitis or panuveitis, where systemic administration is limited by the risk of systemic side effects. Laser photocoagulation is an additional treatment option for certain types of uveitis, such as retinal vein occlusion and diabetic retinopathy, but it does not directly target inflammation.

**Why Each Wrong Option is Incorrect:**

A. Topical corticosteroids are the initial treatment option for mild to moderate anterior uveitis due to their better local control, fewer systemic side effects, and lower risk of infection. They suppress the inflammatory response and reduce the risk of complications like cataract formation and glaucoma.

B. Systemic corticosteroids are essential in severe cases where topical therapy alone is insufficient to control inflammation. They work by inhibiting the production of cytokines and other inflammatory mediators.

C. Intravitreal corticosteroids are used in cases of chronic posterior uveitis or panuveitis, where systemic administration is limited by potential systemic side effects. They directly target the ocular inflammation and reduce the risk of complications like cataract formation and glaucoma.

D. Laser photocoagulation is used in specific retinal vascular disorders, such as retinal vein occlusion and diabetic retinopathy, to prevent further disease progression and reduce the risk of complications like retinal detachment and bleeding. It does not directly target the underlying inflammation, making it an additional intervention alongside corticosteroids or immunosuppressive agents.

**Clinical Pearls:**

1. Choosing the appropriate corticosteroid therapy depends on the severity of uveitis, with topical being preferred for mild to moderate anterior uveitis and systemic corticosteroids for severe cases.
2. Intravitreal corticosteroids can be used when systemic administration is limited by potential systemic side effects.
3. Laser photocoagulation is an additional treatment for specific retinal vascular disorders, preventing further disease progression and reducing complications.
4. Adequate treatment planning involves considering the type of uveitis, its severity, and potential side effects of systemic corticosteroids. This ensures optimal treatment outcomes, minimizing complications and addressing the specific