**Question:** Most common ocular foreign body is

A. Glass
B. Wood
C. Lead
D. Stone

**Correct Answer:** A. Glass

**Core Concept:** Ocular foreign bodies are objects that unintentionally enter the eye and can cause potential damage to the eye or surrounding structures.

**Why the Correct Answer is Right:** Glass is the most common ocular foreign body due to its frequent usage in daily life (e.g., windows, mirrors, and kitchen utensils). When a glass foreign body enters the eye, it can cause mechanical damage to the cornea, conjunctiva, or intraocular structures, leading to pain, redness, photophobia, and vision loss if left untreated.

**Why Each Wrong Option is Incorrect:**

B. Wood: Wood is less common due to its rarity in daily life and generally being larger, which makes it less likely to penetrate deeply into the eye.
C. Lead: Lead is less common due to its rarity and toxicity, leading to potential complications like lead uveitis and cataract formation.
D. Stone: Stones are less common than glass due to their lower prevalence in daily life and potential to cause more significant damage due to their hardness, size, and weight.

**Clinical Pearl / High-Yield Fact:** A timely and appropriate management of ocular foreign bodies is crucial to prevent complications and preserve the eye's health. Prompt referral to an ophthalmologist is essential to assess the extent of injury, remove the foreign body, and manage any associated ocular infections or injuries.