Eye Scratch (Corneal Abrasion), First Aid 

Although it is very difficult to see a corneal abrasion with the naked eye, you have to be suspicious of this if you have experienced any of the causes of trauma mentioned above. Along with that is the unrelenting painful feeling that something is in your eye that just won't wash out, plus:

• Lots of watery tearing.
• Sensitivity to light (especially bright light).
• Blurry vision.
• Redness of the eye.
• Spasm of the muscles surrounding the eye resulting in squinting.