Question

As a part of postoperative management, which of the following is least likely to cause astigmatism?

1) Inadequate wound closure
2) Corneal edema
3) Zonular dehiscence
4) Iris prolapse

Answer 1

Zonular dehiscence is least likely to cause astigmatism compared to inadequate wound closure, corneal edema, and iris prolapse, as astigmatism is mainly due to corneal or lens irregularities, not the zonules.

Step-by-step explanation:

Of the options provided for postoperative management, zonular dehiscence is least likely to cause astigmatism. Astigmatism is primarily caused by irregularities in the shape of the cornea or lens, which affects how light is focused onto the retina. Here is a brief explanation of why the other options could cause astigmatism:

• Inadequate wound closure can result in irregular healing and thus alter the corneal curvature.
• Corneal edema can temporarily change the curvature of the cornea, causing astigmatism.
• Iris prolapse, while uncommon, can distort the anterior chamber and potentially affect the cornea or lens position, leading to astigmatism.

Zonular dehiscence refers to the disruption or breakage of the zonules, which are the fibers that hold the lens of the eye in place. While this condition may lead to lens dislocation and other issues, it does not directly result in astigmatism since it doesn't affect the cornea's shape.