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.
One common cause of sore eyes is conjunctivitis (or pink eye), but the problem can also be caused by an infection, allergies, too much sun exposure, eye fatigue, or contact lens wear.