The reply by "doctor-my-eyes" is not correct, or at least we can not
know if it is correct because we do not know what kind of contact lens
you are wearing and how the fitting curve relates to your cornea curve.
Further, a contact lens power on the eye is not mathematically
equivelent to the spectacle power.  For example:

your glasses prescription is:

R -4.00 -0.25 110>>>>> this relates to a theoretical contact lens power
of -4.00 or -4.25, the higher power more likely if it is
silicone-hydrogel type lens. That .25 difference may or may not matter
in any event.

L -5.00 -0.25 095>>>>>this relates to a theoretical contact lens power
of -4.50 or -4.75, because as mentioned above *and* the fact that a
spectacle lens power measured at 13mm in front of the eye needs to be
adjusted to less minus power when measured at the cornea (like a contact
lens) for the same net effective power.

your contact prescription is:

R -4.25 8.6
L -4.75 8.6

And therefor both prescriptions are darn near the same and likely
correct, especially if as you mentioned, the practioner measured the
powers in the phoroptor or with hand held lenses.

--L.B., O.D.