Hi everyone, I am new here so sorry if this is in the incorrect forum.
I have a Visual Optics exam on thursday in which I may be required to draw fairly accurate with-the-rule and against-the-rule astigmatic cones. My problem is they are hard to draw and i was wondering if anyone had any tips or short cuts for drawing them?:hammer: I understand this differences etc and i can draw them but it takes me a fair amount of time (which i wont have in the exam).
Thanks very much.
Dan
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