Blepharitis

In the management of ocular surface disease, it is helpful to distinguish anterior and posterior (meibomian gland dysfunction [MGD]) blepharitis from aqueous deficient dry eye. Anterior blepharitis affects the lash line and includes posterior blepharitis, which is defined as meibomian gland involvement. Worsening of symptoms in the morning is typical of blepharitis, whereas worsening of the symptoms later in the day are typical of aqueous deficient dry eye. (, , )