What is a typical "K" reading for with-the-rule astigmatism?

With-the-rule astigmatism is characterized by having a steeper curvature in the vertical meridian compared to the horizontal meridian. This usually means that the cornea has a more pronounced curvature at 90 degrees.

In the context of the K readings, which measure the curvature of the cornea, a typical result for with-the-rule astigmatism would show a significant difference in values between the two meridians, with the vertical meridian (often associated with 90 degrees) having the higher value.

The reading given in the correct answer shows a steepness of 44 diopters in the vertical meridian and 43 diopters in the horizontal meridian. This indicates that the vertical meridian is significantly steeper, which is consistent with the characteristics of with-the-rule astigmatism.

Typically, K readings for with-the-rule astigmatism tend to fall within a range where the vertical meridian's reading is equal to or steeper by one or two diopters compared to the horizontal meridian. This aligns well with the 44/43 reading provided in the correct response, demonstrating the typical pattern of corneal curvature associated with this form of astigmatism.