Keratoconjunctivitis sicca is relatively common within the United States, especially so in older patients. Specifically, the persons most likely to be affected by<unk> <unk> s are those aged 40 or older. 10–20% of adults experience Keratoconjunctivitis sicca. Approximately 1 to 4 million adults (age 65–84) in the USA are affected. While persons with autoimmune diseases have a high likelihood of having<unk> <unk> s, most persons with<unk> <unk> s do not have an autoimmune disease. Instances of Sjögren<unk>  and keratoconjunctivitis sicca associated with it are present much more commonly in women, with a ratio of 9:1. In addition, milder forms of keratoconjunctivitis sicca also are more common in women. This is partly because hormonal changes, such as those that occur in pregnancy, menstruation, and menopause, can decrease tear production. In areas of the world where malnutrition is common, vitamin A deficiency is a common cause. This is rare in the United States. Racial predilections do not exist for this disease.
Dry eye syndrome
Cat eye syndrome
Ocular ischemic syndrome
Phacolytic glaucoma
Motion-induced blindness
Iridocorneal endothelial syndrome
Ghost cell glaucoma
Infiltrative ophthalmopathy