SYMPTOMS:

The most common are irritation ,foreign body sensation,burning, a stringy mucus discharge and transient blurring of vision. The less frequent symptoms are itching, photophobia and a tired or heavy feeling .patients with filamentary keratitis may complain of severe pain brought on blinking.
Surprisingly, patience seldom complain that their eyes are dry. Although some may report a lack of emotional tears or a deficient response when peeling onions. The symptoms of KCS are frequently exacerbated on exposure to conditions associated with increased tear evaporation (e.g air conditioning ,wind,central heating ) or prolonged reading ,when blink frequency is reduced . Symptoms may be improved by lid closure .