Infectious diseases are common infectious diseases involving the eye include the following
- Conjunctivitis / Pink eye – One of the most common infectious eye diseases. Commonly referred as pink eye. Patients experience symptoms like redness, watery discharge from eyes, itchiness or foreign body sensation. The cause of conjunctivitis depends upon the type of organisms that could be of bacterial, viral or allergic in origin.
- Keratitis – Infectious keratitis happens when your cornea gets infected. The cornea is the clear layer that covers your pupil and iris. Keratitis results from either an infection (bacterial, viral, fungal, or parasitic) or an eye injury. Common keratitis cases occurs in cases of :
Contact lenses wearer.
- If your immune system is weak from another condition or illness
- Humid and warm climatic conditions
- Prolonged corticosteroid eye drops usage for an existing eye condition
- If your eye is injured, especially by plants with chemicals that can get into your eye.
- Blepharitis- Blepharitis is an inflammation of your eyelids, the skin folds covering your eyes. This type of inflammation is usually caused by clogging of the oil glands inside the eyelid skin at the base of your eyelashes. Blepharitis may be caused by bacteria.
Ocular allergy: Ocular allergy is an inflammatory reaction of the surface of the eye to particles (allergens) in the environment. It is quite common and affects people of all ages. Inflammation can be asymptomatic, or cause dramatic symptoms.
There are five types of ocular allergy:
- Seasonal allergic conjunctivitis
- Perennial allergic conjunctivitis
- Giant papillary conjunctivitis (GPC)
- Vernal keratoconjunctivitis (VKC)
- Atopic keratoconjunctivitis (AKC)