First of all, an ophthalmologist should determine whether there is a dry eye at all - or whether the annoying irritation of the eye may be triggered by an infection or by another disorder or disease.
If dry eyes are confirmed, there are several ways to prevent worsening and to use targeted therapy that your eye doctor will recommend.
This is explained in more detail in the following chapters:
Therapy - Tear Supplements
Therapy - Overview of Therapies for Eyelids & Meibomian Glands
Therapy - BASIC for Eyelids & Meibomian Glands for Eyelids & Meibomian Glands
Therapy - APPARATIVE device based for Eyelids & Meibomian Glands
Therapy - Prescription medicine
Generally, the therapy concept for dry eye disease has staggered therapy steps according to the severity of the condition.