**Core Concept**
Eale's disease is a rare, idiopathic inflammatory disorder affecting the retinal blood vessels, leading to retinal hemorrhages, vitreous hemorrhage, and retinal neovascularization. Corticosteroids are used to reduce inflammation in various ocular conditions.

**Why the Correct Answer is Right**
Corticosteroids, particularly intravitreal injections, are the mainstay treatment for Eale's disease due to their potent anti-inflammatory and immunosuppressive effects. They help reduce retinal inflammation, prevent further hemorrhages, and decrease the risk of neovascularization. The intravitreal route allows for high concentrations of corticosteroids to be delivered directly to the affected area, minimizing systemic side effects.

**Why Each Wrong Option is Incorrect**
* **Option B:** Antibiotics are not the primary treatment for Eale's disease, as it is not caused by a bacterial infection. Antibiotics may be used in secondary infections, but they do not address the underlying inflammation.
* **Option C:** Antihistaminics are not effective in treating Eale's disease, as the condition is not related to allergic reactions. Antihistaminics may be used in other ocular conditions, such as allergic conjunctivitis, but they are not relevant to Eale's disease.
* **Option D:** Surgery is not typically indicated as a first-line treatment for Eale's disease, although vitreoretinal surgery may be necessary in advanced cases with retinal detachment or vitreous hemorrhage. Surgery is generally reserved for complications of the disease rather than its primary treatment.

**Clinical Pearl / High-Yield Fact**
It's essential to differentiate Eale's disease from other causes of retinal hemorrhages, such as diabetic retinopathy, trauma, or hypertension. Corticosteroids are effective in treating the inflammatory component of Eale's disease, but prompt diagnosis and treatment are crucial to prevent vision loss.

✓ Correct Answer: A. Corticosteroids