Irregular astigmatism is present when the different meridians of
curvature of the cornea are not 180 degrees apart or the cornea takes
on multiple meridians of curvature. This condition may be thought of as
a bumpy surface topography. The visual result of irregular astigmatism
is distortion of vision that may not correct well even with glasses or
contact lenses.
I also learned more here:
http://www.lasikinistanbul.com/eng/astigmatism.htm
I dont see as blurry as the picture of the persons face but this gives
an idea.
"Astigmatism in which different parts of the same meridian have
different degrees of curvature."
I looked this up. Looking at my topographies, it makes sense. While the
meridian is 180 degrees or parrallel, it is not symetrical. The lower
half of the meridian has higher curvature than the upper half. My
glasses which DONT correct any astigmastim at all doesnt give
headaches. Attempting to correct my irregular astigmastim best as
possible gets my BCVA to 20/40(sometimes can see some of 20/30) but
with poor visual quality. Now I fully understand how people with bad
lasik results feel! I prefer my 20/80 without the astigmastim
correction over my 20/40 with!