Corneal abrasions and corneal foreign bodies

[Vania]

Foreign bodies in the cornea cause abrasions, resulting in pain and redness, and lead to infections, even after they are removed. Most of these injuries are minor.
(See also Overview of Eye Injuries.)
The most common injuries involving the surface of the transparent dome on the front surface of the eye (cornea) are

Scratches (abrasions)
Foreign bodies (objects)