This chapter contains sections titled:

• Introduction

• Anatomy of the outer eye

• Overview of pathophysiology and disease mechanisms (Fig. 71.6)

• Seasonal allergic conjunctivitis

• Acute allergic conjunctivitis

• Perennial allergic conjunctivitis

• Vernal keratoconjunctivitis

• Atopic keratoconjunctivitis

• Giant papillary conjunctivitis

• Investigations and differential diagnosis in ocular allergy

• References