Which biotic GP contact lenses would NOT induce cylinder if rotated to a misaligned position?

The question pertains to the behavior of gas permeable (GP) contact lenses when they are rotated out of alignment, specifically in terms of how they induce cylinder or astigmatism. When a GP lens with a spherical front surface is rotated, it typically should not induce any additional cylindrical power.

In this case, the lens with the specification of 7.63mm / -1.50D is notable because it indicates a lower degree of power compared to the other lenses listed. Lenses that are significantly more powerful and have a greater negative diopter strength typically have designs that could lead to noticeable astigmatic effects when they rotate on the eye.

The lens specified as 7.63mm / -1.50D has a lower negative power, suggesting it may behave more like a spherical lens rather than a cylindrical one, and thus would not likely induce noticeable cylinder when misaligned. This is due to the fact that the lower the power, the lesser the impact misalignment has on the plane of focus, therefore maintaining a better performance in terms of vision quality even when rotated.

In conclusion, the property of the lens that would maintain its cylinder characteristics in a misaligned position relates to its overall power, where the lower negative