I measure my vision using stenopic split. when i measure my right eye i get two directional blur axis i.e. axis 180 and axis 90 (but axis 90 only blur to the right) and i measure my left eye i get blur on axis 180 and axis 90 (but axis 90 only blur to left).
what is the actual axis of my astigmatism?
the image is roughly like this
right eye measurement results
With stenopic slit, you should be able to find one axis where directional blur goes away. If it doesn’t, that’s not directional blur, that’s a higher order aberation, and you’re not going to accommodate it with standard cylinder lenses. Keep rotating the slit around until you find a better angle.
90 and 180 having the same blur means neither of those is your axis of astigmatism. You have to keep trying more angles. Having exactly 180 and 90 for both of you indicates to me you’re both following the same directions and having the same misunderstanding.
Higher order abberations means that instead of a pinched shape your lens or cornea is wrinkled, and that can’t be compensated for with conventional lenses.
If you’re not finding the axis of astigmatism with stenopic slit, stick with your last professional evaluation numbers.
So when you’re looking at an astigmatism wheel, there is not one line that is more clear than the all the others and one that is the most blurry perpendicular to that? Try moving different distances too.
My axis is 180. Also confirmed with mirror shadow, DV is perfectly vertical. But as I see distance objects without any correction, they double more vertically, and also slightly horizontally. In other words, my double vision is rhombic.