How do I convert my toric lens prescription to a spherical lens prescription?

Reading the answers given, nobody has answered anything for you. The mathematical formula for converting a toric Rx to a spherical Rx is this. . .take 1/2 of the cyl power and add it to the spherical power then drop the axis all together. So, if your Rx is -2.75 -0.75 x010 for the right eye, the shperical equivelant would be around -3.00 or -3.25 sph. Looking at your left eye Rx, it would be about the same.