Introduction
At The Retina Clinic London, we offer specialist assessment for patients living with advanced age-related macular degeneration, also known as AMD, geographic atrophy, and severe central vision loss.
For selected patients, the SING IMT™ implantable miniature telescope may offer a surgical option to improve functional vision. The device is designed to magnify images and project them onto healthier areas of the retina, helping some patients make better use of their remaining vision.
This is not a cure for AMD and it does not restore normal vision. However, for carefully selected patients, it may help improve day-to-day visual function, independence, and quality of life.
What is Advanced Age-Related Macular Degeneration?
Age-related macular degeneration is a progressive condition affecting the macula, the central part of the retina responsible for sharp, detailed vision. AMD can make everyday activities such as reading, recognising faces, using a phone, and watching television more difficult. The Retina Clinic London’s AMD page follows this same patient-facing structure, describing AMD as a condition affecting central vision and explaining both dry and wet forms.
In advanced stages, AMD may include:
- Geographic atrophy, an advanced form of dry AMD
- Advanced dry AMD
- End-stage wet AMD with scarring
- Severe central vision loss or a central blind spot
Patients may notice blurred, missing, or distorted central vision while their side vision remains relatively preserved.
What is SING IMT™?
SING IMT™ stands for Smaller-Incision New-Generation Implantable Miniature Telescope. It is a small telescope implant placed inside one eye during surgery, replacing the eye’s natural lens in a way that is broadly similar to cataract surgery.
The implant magnifies the central image and redirects it to healthier parts of the retina surrounding the damaged macula. This may help selected patients see detail more clearly.
SING IMT™ is intended for patients with late-stage AMD and central vision impairment. A current clinical trial describes the device as being studied in patients with moderate to severe central vision loss due to late-stage AMD, including geographic atrophy.
How Does the Implantable Telescope Work?
In advanced AMD, the central macula is damaged, meaning the eye cannot form a clear central image. The SING IMT™ uses telescope optics inside the eye to:
- Magnify the image entering the eye
- Redirect the image away from the most damaged central macula
- Project the image onto functioning areas of retina
- Help reduce the impact of a central blind spot
The implanted eye is usually used for detailed central vision, while the other eye supports peripheral, or side, vision. This requires careful adaptation and visual rehabilitation.
Who May Be Suitable for SING IMT™?
SING IMT™ is not suitable for every patient with AMD. Suitability depends on detailed clinical assessment, retinal imaging, eye anatomy, visual potential, and the patient’s ability to take part in rehabilitation.
It may be considered for selected patients with:
- Advanced age-related macular degeneration
- Geographic atrophy
- Severe central vision loss affecting daily life
- Vision that cannot be adequately improved with glasses or standard treatments
- Preserved peripheral vision
Typical criteria may include:
- Age 55 or over
- Advanced disease affecting both eyes
- No previous cataract surgery in the eye being considered for implantation
- Adequate corneal health and eye anatomy
- Motivation and ability to complete visual rehabilitation
A specialist assessment is essential. At The Retina Clinic London, this would include advanced retinal imaging, functional testing where appropriate, and simulation testing to help assess whether the patient is likely to benefit.
What Happens During Surgery?
SING IMT™ implantation is a specialist microsurgical procedure. It is usually performed as a day-case procedure under local anaesthetic.
The procedure typically involves:
- Removing the natural lens of the eye
- Implanting the miniature telescope
- Positioning the device securely inside the eye
- Monitoring the eye closely after surgery
The newer-generation SING IMT™ was developed to allow a smaller incision than the first-generation implantable telescope. Published six-month data describe the device as a smaller-incision, second-generation implant for late-stage AMD.
Visual Rehabilitation
SING IMT™ treatment is not simply an operation. Rehabilitation is central to achieving the best possible functional outcome.
After surgery, patients usually need a structured low vision rehabilitation programme to learn how to use the new visual system. This may include training for:
- Reading
- Recognising faces
- Using a phone or tablet
- Mobility and orientation
- Adapting between the implanted eye and the other eye
The current SING IMT™ clinical study includes up to 12 rehabilitation or training visits with a low vision specialist, underlining the importance of rehabilitation in the treatment pathway.
What Results May Be Possible?
Outcomes vary between patients and depend on careful selection, eye health, surgery, healing, and rehabilitation.
Published six-month data in a group of 35 patients with late-stage AMD reported improvement in both distance and near vision after SING IMT™ implantation. In that study, 97.1% of operated eyes gained at least one line of distance vision, 68.6% gained at least two lines, and 51.4% gained at least three lines.
Some patients may experience improved ability to:
- Recognise faces
- Read larger print or messages
- Watch television
- Use digital devices
- Carry out daily activities with greater confidence
These outcomes cannot be guaranteed. The purpose of assessment at The Retina Clinic London is to understand whether this treatment is appropriate and whether the patient has realistic potential to benefit.
Is SING IMT™ a Cure for AMD?
No. SING IMT™ does not cure AMD, stop the condition from progressing, or restore normal vision.
It is designed to improve functional vision by helping the eye use healthier areas of the retina more effectively. The Macular Society similarly notes that SING IMT™ is not a cure for late-stage AMD and does not restore vision to the level a patient had before AMD developed.
Risks and Safety
As with any eye surgery, there are risks. These will be discussed carefully during consultation.
Possible risks and considerations may include:
- Temporary corneal swelling
- Inflammation
- Raised eye pressure
- Reduced corneal endothelial cell count
- Need for further treatment or monitoring
- Infection or bleeding, which are uncommon but serious risks of intraocular surgery
- Limited benefit if the eye or visual system is not suitable
The Retina Clinic London’s approach is to assess suitability carefully before treatment, explain the balance of benefits and risks clearly, and provide close follow-up after surgery.
Why Choose The Retina Clinic London?
The Retina Clinic London is a specialist centre for retinal disease, advanced diagnostics, retinal surgery, and clinical innovation.
Patients benefit from:
- Consultant-led retinal assessment
- Advanced multimodal imaging
- Detailed macular and retinal evaluation
- Specialist surgical expertise
- Personalised treatment planning
- Close aftercare and long-term monitoring
- Access to clinical research where appropriate
The clinic’s patient journey is designed to provide clarity from the first consultation through to diagnosis, treatment planning, aftercare, and long-term follow-up.