What visual condition can result from improper focusing due to astigmatism?

Astigmatism is a common refractive error caused by an irregular shape of the cornea or lens of the eye, which leads to improper focusing of light on the retina. As a result, individuals with astigmatism may experience blurred or distorted vision at various distances. One of the visual conditions that can arise from this improper focusing is double vision, also known as diplopia.

In the context of astigmatism, double vision can occur because the brain receives two different images from each eye due to the differing focus. This can create a perception of seeing two images of a single object, which is particularly disorienting and can happen at any distance, especially if the astigmatism is uncorrected.

Other conditions listed, such as color distortion, night blindness, and xanthopsia, are typically associated with different underlying issues or visual disorders and are not directly related to the focusing problems caused by astigmatism. Therefore, double vision stands out as the most relevant visual condition linked to this refractive error.