I'm a near sighted glasses wearer with astigmatism and I'm not seeing anything I wouldn't expect to (though blue/red can be quite 'jarring', but I'm not seeing

I'm a near sighted glasses wearer with astigmatism and I'm not seeing anything I wouldn't expect to (though blue/red can be quite 'jarring', but I'm not seeing the 'depth'). Apparently some people experience it, some don't, but I can't find anything about why or what that distinction really means.