Ocular astigmatism is usually caused by irregularities in corneal morphology. The refractive power of the cornea varies at different meridians, and infinitely distant parallel light rays refracted by the refractive system of the eye do not form a focal point, but a diffuse circle, resulting in blurred vision. Astigmatism is usually inherent. Normally, the eye itself has a physiological astigmatism of about 25 to 50 degrees in the vertical direction due to the pressure of the eyelid during blinking and the gravitational effect of the upper eyelid. In general, astigmatism does not change greatly, but if astigmatism changes significantly and progresses rapidly, corneal topography should be performed to rule out the possibility of cone corneas. Early cone corneas can be controlled by wearing rigid corneal contact lenses, or by corneal collagen cross-linking, or, if necessary, by corneal transplantation. The primary treatment for astigmatism is optometry and appropriate glasses. Corneal laser surgery can also help eliminate astigmatism. If cataracts occur, an IOL that can correct astigmatism can be implanted at the same time as cataract surgery. The astigmatism of the IOL and the astigmatism of the cornea will cancel out, and astigmatism-correcting glasses will no longer be needed after surgery. In conclusion, astigmatism in the eyes is generally difficult to recover, but certain measures can be taken to correct it.