uveitis

What is uveitis?
Uveitis is an inflammation of the middle layer of the eye called the uvea. This includes the iris, the ciliary body
and the choroid. Uveitis can occur in one or both eyes. Inflammation of the uvea may involve other parts of the
eye, or any part of the eye, including the cornea, the sclera, the vitreous body, the retina and the optic nerve.

What are the types of uveitis?
When Dr. Dodge diagnoses and treats uveitis, he may categorize it in different ways. Uveitis is often grouped by
the part of the uvea it affects.

Anterior uveitis
    Anterior uveitis affects the front of the eye. It is often called iritis, because it mainly affects the area around
    the eye's iris. Anterior uveitis is the most common type of uveitis in children and adults making up 40-
    70% of all uveitis. It is usually acute (i.e.  comes on suddenly and lasts for less than 6 weeks) and is
    associated with pain, light sensitivity, blurred vision and redness. Although it can be caused by a number
    of different kinds of arthritis and inflammatory diseases of the body, in most cases, the cause is unknown.

Intermediate uveitis
    Intermediate Uveitis is an inflammation of the ciliary body, the front end of the retina, and the vitreous. The
    vitreous body is a clear gel-like substance that fills the inside of the eyeball between the lens and the
    retina. Intermediate uveitis is the least common type of uveitis, making up only 7-15% of cases. It is also
    known as cyclitis, pars planitis or vitritis.

    Symptoms include floaters and blurry vision. People with intermediate uveitis are more likely to have
    chronic inflammation. Chronic uveitis is defined as uveitis lasting longer than 6 weeks.

    In most cases, the cause is unknown. An inflammatory disease called sarcoidosis, MS (multiple
    sclerosis, an inflammatory disease that affects thebrain and spinal cord) or Lyme disease may cause
    some cases of intermediate uveitis.

Posterior uveitis
    Posterior uveitis is an inflammation of the choroid, retina and optic nerve. The optic nerve is the path that
    carries images from the retina to the brain. It can be seen in 15-22% of uveitis types. Generally it is
    chronic (long standing- can last weeks to months to yeasrs), recurrent (in which a patient has multiple
    flare-ups between periods of a quiet eye) and affects both eyes. The underlying cause is often a result of
    an immune disease. Infections caused by the organism toxoplasmosis are the most ccommon cause of
    posterior uveitis.

Panuveitis
    In some cases, inflammation can affect the entire uvea. This inflammation is sometimes called
    panuveitis. People with panuveitis may be more likely to experience vision loss from the condition.
    Symptoms include floaters, blurriness or loss of vision. As with other kinds of uveitis, the cause of
    panuveitis is often unknown.

Is the disease serious?
If untreated, anterior uveitis can lead to other eye problems and cause permanent damage. It usually responds
well to treatment, however there may be a tendency for the condition to recur.

How is uveitis diagnosed?
Since the symptoms of anterior uveitis are similar to those of some other eye diseases, Dr. Dodge will carefully
examine the inside of the eye, under bright light and high magnification, to determine the presence and severity
of the condition. Dr. Dodge may also perform other diagnostic procedures and arrange for otehr tests to help
pinpoint the cause.

What is the treatment for uveitis?
Prescription eyedrops that dilate the pupils in combination with anti-inflammatory drugs are usually needed.
Treatment may take several days, or up to a few weeks in some cases. The condition must be monitored closely
by Dr. Dodge who will regulate your medication. Vision loss from uveitis can usually be prevented if diagnosed
and treated. It is very important for Dr. Dodge to try and determine the underlying cause of the inflammation.
Treatment for the underlying cause will help prevent future occurences of the episodes.