My prescription reads OD Sphere 1.00 Cylinder -1.00 Axis 180 OS Sphere 1.00 Cylinder -1.75 Axis 176 what does all that mean?

Your prescription indicates the following for each eye: "OD" refers to your right eye, and "OS" refers to your left eye. The "Sphere" values (1.00) indicate the degree of nearsightedness or farsightedness, with positive numbers for farsightedness and negative for nearsightedness. The "Cylinder" values (-1.00 for OD and -1.75 for OS) indicate astigmatism, while the "Axis" values (180 for OD and 176 for OS) specify the orientation of the astigmatism correction in degrees.