My 12 year old daughter woke up with her eyes very bloodshot yesterday. They had been crusty when she woke up. I put one drop of castor oil into each eye in the evening. She was 95% better by morning, after just one treatment! She said she didn't wake up with crusty eyes. I put another drop in each eye tonight, just for good measure. I have used chamomile, eyebright, and activated charcoal for pinkeye before in my children. All have worked, usually quite quickly. If you keep chamomile tea bags on hand, this is a pretty easy treatment and using moist, cool chamomile tea bags on irritated eyes (from pinkeye or anything else) brings immediate relief.
I will say that castor oil was the easiest of all of these because there was nothing to prepare.
I do use cold pressed, hexane free castor oil when I am using it for medical purposes, especially in the eyes.
~Mama to Many~
I had some kind of "pink eye?" blister inside my eye, somewhat painful... I started putting castor oil in it and after a week the blister all but disappeared. I would also wash the eye with plain water, every other day.
I have used Castor Oil many times for treating Pink Eye, put 1-2 drops in each eye two times a day, eyes will get better with in one day but keep using for 4-5 days. Always treat both eyes. After putting in eyes they will blur some from oil but will not sting at all and will be very soothing, castor oil is antimicrobal and a very healing oil.