The dry eye

It is nothing but a symptom complex occuring as a sequale to deficiency or abnormality of tear film.

Etiology: 1.Aqueous layer deficiency

               2.Mucin deficiency

               3.Lipid abnormality

               4.Impaired eye lid function

               5.Epitheliopathies

Symptoms: irritation,foriegn body sensation,dryness,etc

Signs: Stingy mucous,lusterless ocular surface,corneal inflammation,etc

Tests: Tearfilm Braekup test, Schirmer I test,Rose bengal staining,etc

Treatment:Tear substitutes, topical cyclosporines,topical retinoids, mucolitics,redusing evapourisation and drainage.