[5] In addition to its magnitude and direction, astigmatism may also be classified based on its symmetry. Regular astigmatism is symmetric around the visual axis and classically shows a "bow tie ...

Signs of astigmatism include ... Implantable contact lenses (ICL): Unlike regular contact lenses, ICLs do not need to be cleaned. Instead, the artificial lens is a good option for those unsuitable ...

She also recommended the lens for patients with low to moderate astigmatism and those who are post-LASIK, post-PRK or post-RK with regular astigmatism. Ideal candidates should have 6.5 mm or more ...