It is (RIBSA) Recurrent Interstitial Bilateral Self-limiting Allergic inflammation of the Conjunctiva having a Seasonal incidence. It is an hypersensitivity reaction to exogenous allergen specially grass pollen.  IgE mediated reaction has a crucial role here.
Predisposing factors and Risk factors-

Patient may have family history of atopic disease- hay fever,asthama,allergic rhinitis, atopic dermatitis. Their eosinophil count may be high in blood.
Age- specially …

It is the Inflammation of conjunctiva due to allergic or hypersensitivity reactions which may be immediate( humoral) or delayed( cellular). Conjuctiva is highly sensitive to allergens than our skin( upto 10 times). Allergic conjunctivitis is prevalent around the world.

Classification-

Simple Allergic

Hay fever Conjuctivitis
Seasonal Allergic Conjunctivitis
Perrenial allergic Conjunctivitis

Vernal Keratoconjunctivitis
Atopic Keatoconjunctivitis (often associated with atopic dermatitis)
Giant papillary Conjunctivitis ( Contact lens related)
Phlyctenular Keratoconjunctitvitis
Contact …

An External hordeolum
Sty  is an acute small staphylococcal abscess of a lash follicle and its associated gland of Zeis or moll.

Symptoms:

sty are  redness, tenderness, and pain in the affected area.
The eye may feel irritated or “scratchy.”
Later  swelling, discomfort , watering of the eye, and sensitivity to light.
small, yellowish point at the center of …