What is a corneal abrasion?

A corneal abrasion refers specifically to a scratch or irritation affecting the outer layers of the cornea, which is the clear, protective front surface of the eye. This condition can occur due to various factors, such as foreign bodies (like dust or sand), improper contact lens usage, or trauma to the eye.

Understanding the nature of a corneal abrasion is crucial in recognizing the symptoms associated with it, such as pain, redness, tearing, and sensitivity to light. It is important for those working in the beauty and eyelash extension industry to be aware of this condition, as the application of eyelash extensions can involve close proximity to the eyes and potentially increase the risk of irritation or damage.

Other options describe different eye-related issues. Eyelash growth issues, infections, and allergic reactions each involve different physiological problems that do not pertain specifically to the definition of a corneal abrasion and thus do not reflect the correct understanding of this term.