Which condition is characterized by difficulty in seeing distant objects?

The condition characterized by difficulty in seeing distant objects is myopia, commonly known as nearsightedness. In myopia, the shape of the eyeball is often elongated, or the cornea is too curved, causing light rays to focus in front of the retina instead of directly on it. This leads to blurry vision for objects that are far away, while close objects can be seen clearly.

Understanding myopia is important as it is one of the most common refractive errors of the eye, which can be effectively managed with corrective lenses, contact lenses, or surgical options. The other conditions like hyperopia, astigmatism, and presbyopia pertain to different visual impairments. Hyperopia affects the ability to see nearby objects clearly, astigmatism results from an uneven curvature of the cornea or lens causing distorted vision, and presbyopia is age-related difficulty in focusing on close objects, typically experienced in middle age and beyond.