What can coloboma affect in the eye?

Coloboma is a congenital condition characterized by a defect involving the structure of the eye, which can impact various ocular structures. The correct answer highlights that coloboma can affect the iris, eyelid, or lens. Specifically, it occurs due to the incomplete closure of the embryonic fissure during eye development, leading to missing tissue.

In the context of the iris, coloboma may present as a notch or cleft, which can alter the appearance of the iris and affect pupil shape. If it involves the eyelid, it can lead to underdevelopment or gaps in the eyelid structure. Regarding the lens, colobomas can cause opacities or structural changes in this important component of the eye, although this is less common than effects on the iris and eyelid.

This comprehensive understanding of coloboma's impact across multiple eye structures is essential for vision professionals. It ensures they recognize the condition's potential variability and informs appropriate management and patient counseling.