Blepharitis

This is a disease in which the edge of the eyelid becomes inflamed. The cause may be a bacterial infection (such as staphylococcal bacteria), Seborrheic Dermatitis (seborrheic blepharitis is the most common form), or allergies. Lice infection of the eyelid may also cause blepharitis.

It may involve the skin of the eyelids, eyelashes, or glands of the eye. Ulcers (sores) may form because of secondary infection.

There are actually two forms -- anterior and posterior, which will be determined by an ophthalmologist.

Eye irritation, burning, and itching

Eyes appear "red rimmed"

Eyelids appear swollen

Tears are thick or greasy

Anterior blepharitis:

Keep eyebrows, scalp, and lid margins clean (i.e., free of scales).
Scales on eyelids should be cleaned with damp cotton and baby shampoo
Anti-staphylococcal antibiotic eye ointment (bacitracin or erythromycin)

Posterior blepharitis:

Antibiotics by mouth

Topical corticosteroids

Hordeolum -- abscess caused by staphylococcal bacteria in which the eyelid becomes red and swollen. "Stye" is a form of a Hordeolum. Treat with a warm, moist compress (surprisingly helpful for the discomfort), antibiotic ointments, an incision, and drainage if necessary.

Chalazion -- a hard, tender swelling of the eyelid, causing the eye to turn red