<unk>  <unk> , also known as keratoconjunctivitis sicca (KCS), is the condition of having<unk> <unk> s. Other associated symptoms include irritation, redness, discharge, and easily fatigued<unk> s. Blurred vision may also occur. Symptoms range from mild and occasional to severe and continuous. Scarring of the cornea may occur in untreated cases.<unk> <unk>  occurs when either the<unk>  does not produce enough tears or when the tears evaporate too quickly. This can result from contact lens use, meibomian gland dysfunction, pregnancy, Sjögren syndrome, vitamin A deficiency, omega-3 fatty acid deficiency, LASIK surgery, and certain medications such as antihistamines, some blood pressure medication, hormone replacement therapy, and antidepressants. Chronic conjunctivitis such as from tobacco smoke exposure or infection may also lead to the condition. Diagnosis is mostly based on the symptoms, though a number of other tests may be used. Treatment depends on the underlying cause. Artificial tears are usually the first line of treatment. Wrap-around glasses that fit close to the face may decrease tear evaporation. Stopping or changing certain medications may help. The medication ciclosporin or steroid<unk>  drops may be used in some cases. Another option is lacrimal plugs that prevent tears from draining from the surface of the<unk> .<unk>  occasionally makes wearing contact lenses impossible.<unk>  is a common<unk>  disease. It affects 5–34% of people to some degree depending on the population looked at. Among older people it affects up to 70%. In China it affects about 17% of people. The phrase "keratoconjunctivitis sicca" means "dryness of the cornea and conjunctiva" in the Latin language.
Dry eye syndrome
Cat eye syndrome
Ocular ischemic syndrome
Phacolytic glaucoma
Motion-induced blindness
Iridocorneal endothelial syndrome
Ghost cell glaucoma
Infiltrative ophthalmopathy