Macular Telangiectasia Type 2 (MacTel)

MacTel mostly affects the area around the center of your retina, called the juxtafoveal or parafoveal region. This area is important for sharp, clear vision up close. The disease primarily damages the light-sensing cells (photoreceptors) with accompanying vascular changes, which harms the retina’s ability to send clear images to the brain.

MacTel mainly affects your central vision, making reading, recognizing faces, and seeing details harder. You may notice missing letters in words when reading, or that straight lines look wavy or bent. These symptoms can develop slowly and may be more noticeable in one eye at first.

Difficulty reading is often the first sign. You may see words blur or disappear, need more light, or skip letters while reading. These problems are caused by small blind spots or distortions in your central vision.

You may see parts of words or letters missing, especially in the center of your vision. This is because small areas of your retina, called scotomas, stop working.

Straight lines may look bent, wavy, or distorted, especially when reading or looking at grids. This is called metamorphopsia.

You might notice that colors seem less bright or are harder to tell apart in your central vision. These changes are often detected with special testing and are not specific to one color.

As your brain works harder to see around blind spots, you may feel tired more quickly when reading or doing detailed work.

Complete blindness is very rare. Most people keep useful vision, especially peripheral vision, and remain independent with proper support and aids.

Vision usually declines slowly over many years. The rate of change varies from person to person and may differ between eyes.

Most cases occur in people with no family history. Some families have more than one affected person, but no single gene causes MacTel.

There is no cure. ENCELTO may help slow down vision loss, and treatments can address complications, but lost vision is not restored.

Routine testing for family members is not necessary. If relatives have reading difficulty or vision changes, they should have a complete eye exam.

MacTel usually affects both eyes, though not always at the same time or to the same degree. Regular exams for both eyes are important.

Many people continue reading using magnifiers, better lighting, and techniques from low vision specialists. Many helpful adaptations are available.

MacTel and age-related macular degeneration are different diseases with different patterns on imaging, typical ages, and treatment approaches.

Contact a retina specialist right away if you notice sudden vision changes, new distortion, or sudden loss of vision. This could signal new blood vessel growth that needs prompt care.

Driving can be affected as central vision changes, especially in low light or complex conditions. Regular testing and an honest discussion with your doctor help guide safe decisions.

No specific activities need to be avoided because of MacTel. Good lighting and safety precautions become more important as vision changes.

Most people with MacTel need exams every 3–6 months, depending on disease stage and your doctor’s recommendations. Regular monitoring is essential.