What modification could enhance comfort for patients with gas permeable lenses who experience foggy vision?

Using a larger lens diameter can enhance comfort for patients with gas permeable lenses who experience foggy vision. This modification can help improve the overall stability of the lens on the eye, which in turn can positively affect vision clarity and comfort. A larger diameter often results in a better fit, reducing movement on the ocular surface and minimizing the potential for fogging due to tears getting trapped behind the lens. Additionally, a larger lens may offer better coverage of the cornea, improving the tear film distribution and leading to a more comfortable wearing experience.

In contrast, switching to soft lenses or using a smaller lens diameter might not address the underlying issue of foggy vision. Soft lenses have different characteristics that may not resolve vision issues related to gas permeable lenses, while a smaller lens diameter could further exacerbate lens movement and alignment problems on the eye. Increasing the lens thickness is generally associated with a change in the lens fitting characteristics but would not necessarily improve comfort or clarity and could lead to a heavier, less comfortable lens wear experience.