What type of corneal injury is characterized by foreign body sensation and pain?

Traumatic abrasion of the cornea is a type of injury that occurs when the surface of the cornea is damaged, typically due to a foreign object coming into contact with the eye. This type of injury often results in symptoms such as foreign body sensation, significant pain, redness, tearing, and photophobia (sensitivity to light). The pain is primarily due to the exposure of nerve endings in the cornea that are normally protected by the epithelial layer.

In contrast, a chemical burn primarily causes symptoms related to the chemical exposure rather than a foreign body sensation. Ahakic injury does not pertain to a specific corneal injury type, and refractive error describes a vision problem rather than a physical injury to the cornea. Therefore, the characteristics of foreign body sensation and pain are most clearly associated with a traumatic abrasion, validating this as the correct choice.