Which structure is a normal remnant of the primary vitreous that represents a former site of the hyaloid artery?

Which structure is a normal remnant of the primary vitreous that represents a former site of the hyaloid artery?

• A. Cloquet's canal
• B. Mittendorf's dot
• C. Berger's space
• D. Bergmeister's papillae

Answer: (A)

During eye development, the hyaloid artery travels through the vitreous to nourish the forming lens. After development completes, the primary vitreous and the hyaloid vessels largely regress, but vestiges remain. Cloquet's canal is the central, transparent channel left behind in the vitreous that marks the path the hyaloid artery followed from the optic nerve to the posterior lens. This makes it the normal remnant of the primary vitreous reflecting the former site of the hyaloid artery. By contrast, Mittendorf's dot is a small opacity on the posterior lens capsule representing a residual hyaloid attachment to the lens, Bergmeister's papillae are a residual tuft of hyaloid vessels on the optic disc, and Berger's space is a potential space behind the lens, not a direct remnant of the hyaloid artery’s pathway.

During eye development, the hyaloid artery travels through the vitreous to nourish the forming lens. After development completes, the primary vitreous and the hyaloid vessels largely regress, but vestiges remain. Cloquet's canal is the central, transparent channel left behind in the vitreous that marks the path the hyaloid artery followed from the optic nerve to the posterior lens. This makes it the normal remnant of the primary vitreous reflecting the former site of the hyaloid artery. By contrast, Mittendorf's dot is a small opacity on the posterior lens capsule representing a residual hyaloid attachment to the lens, Bergmeister's papillae are a residual tuft of hyaloid vessels on the optic disc, and Berger's space is a potential space behind the lens, not a direct remnant of the hyaloid artery’s pathway.