134 indicates that this is a prescription for glasses and not lenses. Lenses are typically only available in increments of 10.
If that's the case, you should get a new prescription specifically for lenses, because the spherical correction (-4.5) will also be different between glasses and lenses, because of the distance to the eye.
The correction is typically slightly lower than for glasses, but besides the corrections (sphere, cylinder and axis), lenses also have curve (BC) and diameter (DIA) to fit your eye.
If you have an old box of lenses you can usually find all the numbers printed on the side.
I only use lenses occasionally, so when I recently ordered lenses online using the info from an old box and correcting for the change in my glasses since I had the old lenses, I could sort of figure it out, but they are probably still off by 0.5 or so.
I think you're better off seeing an optometrist than guessing.