With a non-flexing spherical rigid lens on this eye 0.75 D. of the cylinder would be corrected (43.75 - 43.00) leaving 1.00 D.C. uncorrected.
With a spherical hydrogel lens on the eye -1.75 D.C. would be uncorrected.
Neither a spherical rigid or hydrogel lens would fully correct the patient.
In this case the most efficient method of correcting the patient would be to use a toric hydrogel lens. A rigid prism ballasted front surface cylinder lens could be used, however, the success with this type of lens is often less than the toric hydrogel.