**Core Concept**
Abnormalities of the optic lens are a group of conditions that affect the eye's ability to focus light due to structural changes in the lens. These abnormalities can be congenital or acquired and are often associated with vision problems. The most common types of lens abnormalities include cataracts, lens dislocation, and ectopia lentis.

**Why the Correct Answer is Right**
The correct answer is related to the fact that certain systemic diseases can cause abnormalities in the optic lens. For example, Marfan syndrome, Ehlers-Danlos syndrome, and homocystinuria are genetic disorders that can lead to lens dislocation and ectopia lentis due to the weakening of the zonular fibers that suspend the lens in place. The lens fibers become disorganized, and the lens becomes displaced from its normal position, resulting in vision problems.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the topic of lens abnormalities. It is a distractor and should be avoided.
* **Option B:** This option is incorrect because it does not specify a condition that affects the optic lens. It is a vague term that could refer to any number of eye problems.
* **Option C:** This option is incorrect because it is a type of eye surgery, not a condition that affects the optic lens.

**Clinical Pearl / High-Yield Fact**
One key point to remember is that lens abnormalities can be associated with systemic diseases such as Marfan syndrome, Ehlers-Danlos syndrome, and homocystinuria. These conditions can cause vision problems and should be considered in patients with a history of eye trauma or surgery.

**Correct Answer:** D. Homocystinuria