mam can you tell me that in case of against the rule astigmatism there will be horizontal or vertical line at point"F" because in case of against the rule astigmatism at this very point the horizontal lines are diverging while in case of with the rule astigmatism they are converging
Thanks for this wonderful explanation Maam, but I want to ask this question, since bioblique irregular astigmatism occurs when the the angle between the two principal meridian is less than 90degree, the question is then, what type of astigmatism occur when the angle b/w the meridians is greater than 90 degrees
Whether point focus we should say in front of foveal focus instead of retina in myopia and behind the foveal focus in hypermetropia instead of behind the retina