Idiopathic Juxtafoveal Telangiectasis
Idiopathic Juxtafoveal Telangiectasis (JFT), also known as Macular Telangiectasia (MacTel), is a condition that affects the small blood vessels around the center of the retina. These abnormal vessels can cause changes or damage to the macula and fovea, the areas responsible for the sharp central vision needed for reading, driving, and recognizing faces.
MacTel most commonly affects both eyes and usually develops after age 40. The condition often progresses slowly, and some people may have retinal changes before noticing any symptoms.
Symptoms can vary from person to person and may include:
- Blurred or decreased central vision
- Difficulty reading or recognizing fine details
- Straight lines appearing wavy or distorted
- Blank or missing areas in central vision
- Changes in vision in one or both eyes
Some people may have no noticeable symptoms in the early stages.
The exact cause of MacTel is not fully understood. It occurs when small blood vessels around the fovea develop abnormalities that can damage the surrounding retinal tissue.
Treatment depends on the specific changes present in the retina. Some patients may simply require regular monitoring, while others may benefit from treatment when abnormal blood vessels cause fluid or bleeding.
Treatment options may include anti-VEGF injections, laser treatment, or other therapies designed to help preserve retinal function. A newer treatment may also be appropriate for certain patients with MacTel to help slow the loss of photoreceptor cells.
Prognosis
MacTel typically progresses slowly, and some vision loss may be permanent. However, many patients maintain useful vision in one or both eyes. Regular retinal examinations and monitoring can help track changes and identify complications that may benefit from treatment.
