Retinitis is a disease that threatens vision by damaging the retina -- the light-sensing tissue at the back of your eye. Although there's no cure, there are steps you can take to protect your sight and make the most of the vision you have.
Conjunctivitis (commonly called pink eye): Inflammation of the conjunctiva caused by allergies or infections (viral or bacterial); blood vessels in the conjunctiva become engorged, and the normally white part of the eye looks red. Other symptoms usually include itchiness and discharge.
Corneal abrasions: A scratch on the cornea is called an abrasion. It can be very painful. The cornea is vulnerable to injuries from fingers, errant tree branches, or tennis balls. With antibiotic drops and monitoring by your doctor, corneal abrasions tend to get better without further problems.
Corneal infections (called keratitis): Inflamed or infected cornea sometimes caused by bacterial or viral infections; these infections are often associated with wearing contact lenses overnight or wearing lenses that haven't been properly cleaned and disinfected.
Foreign bodies: Something in the eye -- a bit of dirt, plant debris, or a fragment of a contact lens; these are usually just irritating, and tears or water rinse them out. If not removed, foreign bodies can cause corneal abrasions.
Glaucoma:Eye condition that usually has no early symptoms. In the case of acute angle-closure glaucoma, though, pressure inside the eye rises suddenly. Symptoms include severe eye pain, nausea and vomiting, headache, and worsening vision. These symptoms are an emergency and need immediate treatment to prevent blindness.
Iritis or uveitis: Inflammation inside the eye that can be caused by trauma, infections, or autoimmune conditions. Symptoms include pain, red eye, and, often, worsening vision.
Optic neuritis: When the nerve traveling from the back of the eyeball into the brain becomes inflamed; multiple sclerosis or other autoimmune conditions or infections are often the cause. Symptoms include loss of vision and sometimes deep discomfort when looking from side to side.
Sinusitis: Infection in one of the sinus cavities, which can create pressure behind the eyes, causing eye pain on one or both sides
Stye(also called a hordeolum): An often painful infection or inflammation of the edges of the eyelid caused from the eyelash hair follicles or from oil glands; usually, a stye has a very localized, very tender area on one eyelid.