Are there any medications or eye drops that improve astigmatism?

No: Astigmatism results from asymmetric curvature of the cornea. Influenced by variety of factors, including size and shape of the eyeball, position of eyelids, bone structure around eye, age, stiffness of cornea, use of contact lenses, even excessive eye rubbing or pressure on the eyeball at night from sleeping face down. Usually vision correctable w glasses, contacts or lasik.

No: Astigmatism is a form of refractive error like myopia (near-sightedness) or hyperopia (far-sightedness). It is dependant on the physical shape of your eye and hence cannot be altered with medication. Surgical corrections for astigmatism are available for those who qualify. Discuss your options with your eye doctor.