What is iridocyclitis?
Iridocyclitis is an inflammation in the front part of the eye. More specifically, it affects the iris (the coloured part of the eye) and the ciliary body (the ciliary body is a tissue that helps produce the fluid inside the eye and helps the eye focus). This term comes from eye medicine and describes a specific form of uveitis, which is an inflammation of the middle layer of the eye.
What are the symptoms of iridocyclitis?
Typical symptoms of iridocyclitis include sudden pain in the eye, increased sensitivity to light, and a red eye. The white of the eye often looks reddish, especially around the iris. Vision may be blurry, and sometimes small spots or a hazy area can appear in the field of vision. The affected eye is often very sensitive to light, meaning that even normal daylight feels uncomfortable. A feeling of something in the eye or a dull pressure can also occur.
In some cases, the inflammation stays fairly mild, so the symptoms are not very noticeable. Especially at the start, the symptoms can sometimes be confused with a harmless case of conjunctivitis.
What happens inside the eye during iridocyclitis?
The inflammation irritates the tiny blood vessels in the iris and the ciliary body. This causes immune cells and proteins to enter the front part of the eye. As a result, the clear fluid inside the eye can become cloudy. Sometimes a fine deposit settles on the back of the cornea, which doctors call the "Tyndall phenomenon" or "aqueous flare".
The iris can stick together or become attached to the lens, which can later cause problems with the pupil or even lead to raised pressure inside the eye. This is why it is important to recognise and treat iridocyclitis in good time.
Causes and triggers
Iridocyclitis can have many different causes. Often, the exact trigger is not clear. In many cases, it is a reaction of the immune system that turns against the body's own tissue. This happens, for example, with certain rheumatic conditions or autoimmune diseases such as ankylosing spondylitis or juvenile idiopathic arthritis.
Infections with viruses, bacteria, or parasites can also be triggers. Known causes include herpes viruses, tuberculosis bacteria, or Borrelia, which are spread by tick bites. Less commonly, injuries, operations, or a foreign body in the eye can trigger this kind of inflammation.
Is iridocyclitis dangerous?
Many people feel worried when they receive a diagnosis of iridocyclitis. The concern about losing vision or suffering lasting damage is understandable. It is true that untreated or recurring iridocyclitis can lead to complications. Possible consequences include adhesions inside the eye, raised eye pressure (glaucoma), clouding of the lens (cataract), or even lasting problems with vision.
With timely and consistent treatment, however, the inflammation heals well in most cases. It is important to find the underlying cause and to have the eye checked regularly by an eye specialist. If the inflammation is left untreated or keeps coming back, the risk of lasting damage increases.
Treatment options for iridocyclitis
Treatment depends on the severity of the inflammation and the underlying cause. In most cases, anti-inflammatory eye drops containing corticosteroids are used. These reduce the overactive immune response in the eye. In some cases, so-called mydriatics are also prescribed. These are drops that widen the pupil. They prevent the iris from sticking to the lens and ease pain by relaxing the muscles of the eye.
If bacteria or viruses are identified as the cause, specific medicines such as antibiotics or antiviral drugs may be needed. For severe or recurring inflammation, a systemic treatment, meaning tablets or infusions, may be required, for example when an autoimmune disease is the underlying cause.
Regular check-ups with an eye specialist are important to spot complications early and to adjust treatment as needed.
What to do if you suspect iridocyclitis?
Anyone who suddenly notices eye pain, sensitivity to light, or redness of the eye should see an eye specialist as soon as possible. The earlier the inflammation is identified, the better it can be treated. Even after recovering from iridocyclitis, regular follow-up appointments are a good idea to catch any recurrence in good time.
Iridocyclitis is usually very treatable, but it should not be taken lightly. For ongoing symptoms, new symptoms, or any uncertainty, it is always advisable to seek a specialist assessment.
