Which of the following would NOT be a corrective action for a loose lens fit?

Decreasing the "e value," which relates to the edge thickness of the contact lens, is not a corrective action for managing a loose lens fit. In fact, a loose fit typically requires adjustments that enhance the lens's centration and stability on the eye.

When a lens is deemed loose, practitioners often consider increasing the optical zone to provide better optical performance and centration. Adjusting the diameter can also help improve how securely the lens sits on the cornea, enhancing its fit by potentially allowing for more limbal coverage. Increasing sagittal depth, which directly influences how much the lens vaults over the cornea, can create a tighter fit by bringing the lens closer to the eye if the current depth is insufficient.

In contrast, decreasing the edge value does not effectively address a loose fit—rather, it may make the situation worse by making the lens thinner at the edges, which could contribute to greater instability. Therefore, focusing on adjustments that enhance secure contact with the cornea is crucial in this situation, while decreasing the edge thickness would not support that goal.