What condition is characterized by blurred vision due to irregular curvature of the cornea?

Astigmatism is a condition that results from an irregular curvature of the cornea or the lens of the eye. This irregularity prevents light from focusing properly on the retina, which leads to blurred or distorted vision. In a normal eye, the cornea has a smooth, even curvature allowing light to be focused precisely. However, in astigmatism, the uneven shape can cause rays of light entering the eye to focus on multiple points, either in front of or behind the retina, rather than directly on it.

This condition can affect both distance and near vision, producing an overall blurriness that can be more pronounced at certain angles. Astigmatism is commonly diagnosed during routine eye examinations, and corrective lenses or surgical options can typically help manage or correct the vision impairment.

Other choices such as myopia (nearsightedness), hyperopia (farsightedness), and presbyopia (age-related loss of near vision) do not involve the irregular curvature of the cornea but rather issues related to the overall shape of the eye or the flexibility of the lens.