When are soft lenses considered to be poorly fitted?

Soft lenses are considered to be poorly fitted when there is a significant misalignment between the lens and the eye's shape. Specifically, if the mires, which are the visible lines or patterns that help determine the alignment of the lens to the cornea, are more than 90 degrees apart, it indicates that the lens is not centrically positioned on the eye. This misalignment can lead to discomfort, inadequate vision correction, and potential complications. Properly fitting lenses should have mires that are closer together, indicating that the lens is appropriately aligned with the corneal surface.

In contrast, while lenses that are too snug against the eye or those that cause excessive tearing may indicate fitting issues, these are not as definitive as the mires being significantly apart. Additionally, the moisture level of the lens itself (being too wet) does not directly relate to fit but is more about comfort and material properties. Thus, the alignment indicated by the mires is a fundamental aspect of proper lens fitting.