Which structure marks the boundary between the anterior and posterior hyaloid regions?

Which structure marks the boundary between the anterior and posterior hyaloid regions?

• A. Vitreous base
• B. Patellar fossa
• C. Berger's space
• D. Hyaloideocapsular ligament of Weiger

Answer: (A)

The boundary between the anterior and posterior hyaloid regions is defined by the hyaloideocapsular ligament of Weiger. This circular attachment surrounds the posterior lens capsule and tethers the anterior hyaloid membrane to the capsule, creating a distinct interface that separates the front portion of the vitreous (anterior hyaloid) from the back portion (posterior hyaloid). The space just behind the lens, Berger's space, lies between the posterior lens capsule and the anterior hyaloid membrane, and its margins are formed by this ligament. The vitreous base, in contrast, marks the peripheral vitreous attachment to the retina at the ora serrata, not the boundary between hyaloid faces.

The boundary between the anterior and posterior hyaloid regions is defined by the hyaloideocapsular ligament of Weiger. This circular attachment surrounds the posterior lens capsule and tethers the anterior hyaloid membrane to the capsule, creating a distinct interface that separates the front portion of the vitreous (anterior hyaloid) from the back portion (posterior hyaloid). The space just behind the lens, Berger's space, lies between the posterior lens capsule and the anterior hyaloid membrane, and its margins are formed by this ligament. The vitreous base, in contrast, marks the peripheral vitreous attachment to the retina at the ora serrata, not the boundary between hyaloid faces.