Discharge
Pink eye often presents with discharge that can be white, green, or yellow in color. In severe cases, the discharge may be thick enough to cause the eyelashes and eyelids to stick together. This type of sticky discharge is typically a sign of bacterial conjunctivitis. On the other hand, viral and allergic conjunctivitis usually result in watery eyes, and in some cases, a runny nose as well. When the cornea is scratched, the eye produces tears and thin mucus in an attempt to clear away any debris or irritation. If a corneal abrasion becomes infected, the discharge may appear green, yellowish, or thick, indicating the need for medical attention.
Light Sensitivity
When it comes to light sensitivity, corneal abrasions and allergic conjunctivitis exhibit similar symptoms. However, the level of light sensitivity tends to be more intense in cases of a scratched cornea. Individuals with a scratched cornea often find it necessary to cover the affected eye or keep it closed, especially in bright environments. Additionally, watery eyes and a runny nose can be indicative of viral and allergic conjunctivitis, as well as a scratched cornea. It is important to note that bacterial conjunctivitis does not typically result in clear tears.