Subconjunctival hemorrhage - How fast should your eye get red?

Question

Three days ago I woke up with a small portion of the white of my eye bloodshot. I assume this is Subconjunctival hemorrhage, but I have never had it before this incident. My question is, how fast does your eye get red? Should it happen immediately? My redness has stayed the same during the day, but each day since when I wake up there is more of it, so it appears to be happening overnight (three days running now).

Answer 1

Is it bloodshot, meaning lots of big looking red vessels, or is there a patch of red, like a pool of blood?  If it's a patch, it's a subconjunctival hemorrhage and it can spread over the eye and then eventually thin out and reabsorb. Generally it will run it's course within 7 to 10 days.  If it's just bloodshot, it's something different.  In either case, you should probably see your doctor for clarification and any necessary treatment.