The LX has a couple of options: a standard prism with a wider diopter adjustment range ( FA1-W) and a system finder base with a revolving low magnification finder that mounts on it for lots of eye relief and the ability to use it looking down at the camera as well as at eye level. This does add considerable size and weight. These accessories will be a bit hard to find now but they are out there. If you're lucky the FA1-W will have enough diopter correction to use without glasses and still see clearly, and since you can see the f/stop and shutter speed in the finder you can set controls at eye level. For any of the other Pentax K mount cameras that I am familiar with, there were correction diopters made that slide over the eyepiece in a rectangular frame. If you have severe astigmatism you might be able to adapt one of these. The downside of the high magnification finder of the MX was always the difficulty of using it with glasses. The LX with standard prism is a bit more friendly for glasses than the MX, as well as being quieter and more easily hand holdable at slow shutter speeds due to better mirror damping. It is bigger and heavier, if that makes a difference.
