散光,这是许多近视眼患者同时兼有的一种屈光不正现象。它和单纯的近视一样,对生活和工作影响很大,尤其是使用望远镜时,消极影响更为严重,使得望远镜的高分辨率不起作用。大多数望远镜的出瞳距很短,戴着眼镜使用望远镜所观察到的视场非常小,影响了使用效果。因此,许多戴眼镜者往往摘掉眼镜使用望远镜,这就是本文所要解决的问题。如图1所示,近视眼虽然不能把象准确地成到视网膜上,但它所成的象仍然是相当清晰的,只不过象面是在视网膜前面某个位置。但 Astigmatism, which is a myopic reflex of many myopia patients. Like simple myopia, it has a great impact on life and work. Especially when using telescopes, the negative impact is more serious, making the high resolution of the telescope ineffective. Most telescope exit pupil distance is very short, wearing glasses to observe the telescope using a very small field of view, affecting the use of results. Therefore, many people who wear glasses tend to remove the glasses using the telescope, which is the problem to be solved in this article. As shown in Figure 1, although myopia can not accurately image the retina, the image it makes remains fairly clear, except that it is somewhere in front of the retina. but