Eye color outside of the iris may also be symptomatic of disease. Yellowing of the sclera (the whites of the eyes) is associated with jaundice, and may be symptomatic of liver diseases such as cirrhosis or hepatitis. A blue coloration of the sclera may also be symptomatic of disease.
Dry Eye Syndrome. Dry eye syndrome often causes a sandy, gritty sensation in the morning that usually gets worse throughout the day. Dry eyes of varying severity can cause uncomfortable, irritating symptoms. If your eyes are dry, your eyes may burn much more than they itch.
Many causes of eye pain also cause the eye to look red. Other symptoms may be present depending on the cause of eye pain. For example, people may have blurred vision, a bulging eye, or pain worsened by bright light. The cornea (the clear layer in front of the iris and pupil) is highly sensitive to pain.