Horses before zebras. Someone was waving a scope around her face, probably while daydreaming about a new set of titanium golf clubs. Corneal abrasions cause pain and a foreign body sensation, which causes tears, which causes blurry vision. If I could get the patient to blink herself back to normal visual acuity, the pain went away with a drop of tetracaine, and a fluorescein exam showed an abrasion, by all means, I'd squirt some erythromycin goo in there, reassure her, send her home, and call her in the morning. If I think she needs a fundoscopic exam then it's going to be done by someone besides me.