Did you know that the iris can become inflamed?

20 February 2025

Iritis is an inflammatory condition that affects the iris, the colored part of the eye. This inflammation can cause pain, redness and vision disturbances, so it is important to recognize its symptoms in order to seek timely treatment.

Iritis is a form of uveitis, which is inflammation of the uvea (the middle layer of the eye). In this case, the iris is mainly affected, the structure responsible for controlling the amount of light entering the eye by contracting and dilating its muscles.

The causes of iritis can be varied and, in many cases, its origin is autoimmune. Some of the most common causes include:

• Autoimmune diseases: such as juvenile idiopathic arthritis.
• Infections: bacterial, viral or fungal can trigger inflammation of the iris.
• Trauma: a blow or eye injury can cause irritation and subsequent inflammation.

Symptoms

They can vary in intensity and usually include:

• Eye pain: often located in the front part of the eye.
• Redness: especially around the iris.
• Light sensitivity (photophobia): the inflamed eye may feel uncomfortable when exposed to light.
• Blurred vision: the inflammation may interfere with visual clarity.
• Irregular pupil: a change in the shape or size of the pupil may be observed.
  

Diagnosis

The diagnosis of iritis is based on a complete ophthalmologic evaluation that includes:

• Visual acuity test: to determine the impact on vision.
• Slit lamp exam: allows the specialist to see the inflammation in the iris in detail.
• Additional tests: in some cases, blood tests or imaging studies are requested to identify possible underlying diseases.

Treatment

The aim is to reduce inflammation, relieve pain and prevent complications. Some of the treatment options are:

• Corticosteroids: in the form of eye drops to reduce inflammation.
• Treatment of the underlying cause: If the iritis is secondary to an infection or autoimmune disease, the primary cause will be treated.
• Regular follow-up: Regular check-ups with the ophthalmologist are essential to monitor the progress and adjust the treatment as necessary.