Minimum vision loss is seen in which cataract?
**Core Concept**
Cataracts are a leading cause of vision loss worldwide, characterized by the clouding of the lens in the eye. There are several types of cataracts, each with distinct characteristics and effects on vision.
**Why the Correct Answer is Right**
The correct answer is **Cortical Cataract**. Cortical cataracts are characterized by a spoke-like or wedge-shaped opacity that starts in the periphery of the lens and gradually extends towards the center. This type of cataract typically causes minimal vision loss in the early stages, as the central part of the lens remains clear. However, as the cataract progresses, it can cause significant vision impairment.
**Why Each Wrong Option is Incorrect**
**Option A:** Nuclear Sclerosis Cataract is incorrect because it causes a hardening of the central part of the lens, leading to significant vision loss, especially in low light conditions.
**Option B:** Posterior Subcapsular Cataract is incorrect because it causes a dense opacity in the posterior part of the lens, leading to significant vision loss, especially in bright light conditions.
**Option C:** Snowflake Cataract is incorrect because it is a rare type of cataract that causes scattered opacities throughout the lens, leading to significant vision loss.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the type of cataract and its effect on vision can vary significantly between individuals, and a comprehensive eye examination is necessary to determine the type and extent of cataract.
**Correct Answer: C. Cortical Cataract**