Some eyes are more the shape of a rugby ball than a football, which can affect the fine focus of your vision. This is astigmatism. When the astigmatism needs to be incorporated into a prescription in order to achieve good vision, we need to fit your eyes with a toric (or astigmatic) lens. It  is easy nowadays to correct quite a large amounts of astigmatism with modern contact lenses. They are just as comfortable, with the superior quality lenses that we select for our patients, as the single vision lenses. In most cases you will not be aware of any difference in the comfort.