**Core Concept**
Fluctuating refractive errors with cataract are seen in a condition where the lens of the eye undergoes changes in shape, affecting the refractive power of the eye. This is typically associated with a specific type of cataract that affects the lens's ability to change shape and focus light properly.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of a cataract that affects the lens's elasticity. The lens is made up of a protein called crystallin, which is responsible for its transparency and refractive power. In certain conditions, the crystallin protein can become denatured, leading to the formation of cataracts. The correct answer is associated with a type of cataract that affects the lens's ability to change shape and focus light properly, leading to fluctuating refractive errors.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specifically relate to the pathophysiology of cataracts and fluctuating refractive errors.
**Option B:** This option is incorrect because it is associated with a different type of eye condition that affects the retina, not the lens.
**Option C:** This option is incorrect because it is associated with a condition that affects the cornea, not the lens.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that fluctuating refractive errors with cataract are often associated with a type of cataract that affects the lens's elasticity, which can be a challenge to diagnose and manage. A thorough understanding of the pathophysiology of cataracts is crucial for providing appropriate treatment and management.

**Correct Answer:** C. Chandler's syndrome