Which description correctly identifies the posterior capsule of the lens?

• A. It is the anterior surface of the lens
• B. It is the capsule of the lens from the lens equator posteriorly
• C. It is the posterior surface of the cornea
• D. It is the zonules

Answer: (D)

The posterior capsule is the part of the lens capsule that lies behind the equator, extending from the equatorial region backward to the posterior surface of the lens. In other words, it’s the portion of the capsule located posteriorly, not the front surface. The zonules are separate structures—the suspensory ligaments that attach to the lens capsule at the equator to hold the lens in place—so they are not the posterior capsule itself. Therefore, the best description is the capsule of the lens from the lens equator posteriorly.