Not likely, although "difficult to correct" doesn't really tell us much
about your issue.

Astig (minus) axis 90 generally produces more noticeable blur than 180.
.50 is fairly small. If it associated with hyperopia, that may be a
vision issue.  If combined with a moderate amount of myopia, then
perhaps a miniscule effect.  You have oblique angle astigmatism. If you
have the same in the opposite direction in the other eye, uncorrected,
the combined effect is close to zero. If only in one eye with no other
optical correction in either eye, then a potential issue with using
spectacle correction comfortably.

Conclusion here:  there's not enough subjective information or optical
data to have a meaningful discussion specific to you. But to answer the
subject of your post: Yes!

LB, O.D.

I read that dependent on the angle of the astigmatism the same amount can be
worse in two people.  Which is the worst angle?  I've had -0.50 at either 140
or 150 for the last 5 years and this eye is more difficult to correct than
the other, could that be the reason?