How do i take care of a black eye after 3 days ?

Black eye treatment: The initial treatment of "black eye" is ice packs to reduce swelling. Anti-inflammatory medication like Ibuprofen will reduce the pain. After 3 days, however, the swelling should be gone, and the only remaining symptom will be the discoloration, which may still be changing colors from black-purple to yellow-green. The only thing that will help in this phase is warm compresses to speed up healing.

Patience: Not much to do but to let it run it's course.

Bruises: Bruises change in appearance over time, and it is possible to tell by looking at a bruise how old it is. When it first appears, a bruise will be reddish looking. By one to two days, the reddish iron from the blood undergoes a change and the bruise will appear blue or purple. By day six, the color changes to green and by day eight to nine, the bruise will appear yellowish-brown. In last 2-3 wks.