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.
Sore eyes can be caused by a variety of things. In most cases they are caused by staring at a computer screen or book for too long. Your eyes may become sore after a long day at work or if you have been deprived of sleep. An incorrect eyeglass prescription may also lead to sore eyes. Additional causes may include: Airborne irritants such as chemicals, smoke, smog, animal dander, and pollen.