You would be very unhappy with the results of peroxide in your eye. It is a caustic and will burn the delicate tissues of your eye. It also won't help with the stye. If you have not gotten relief in 5 days from the stye cream, you should see your eye doctor to have the stye opened and get some antibiotics. Warm compresses several times a day will make it feel better until you can see the doctor. Hope it feels better soon.