New Research: Age Related Macular Degeneration

The latest Macular Degeneration research reviewed 13 clinical studies on the long term effectiveness and safety of retinal implants in people with severe vision loss with at least 1 year of follow-up.

The study assessed whether these devices provide sustained improvements in vision and quality of life as well as their role in treating severe diseases such as age related macular degeneration. 

All three implant types (epiretinal, subretinal, and suprachoroidal) showed improvements in visual function, such as:

Better light perception and object detection
Improved motion detection and localization
Some gains in visual acuity (though still limited)

However, vision gains were limited:

Visual acuity remained worse than 20/200, meaning patients were still legally blind.

2. Quality of life (QoL)
Most studies reported improved quality of life, especially in:
Mobility
Orientation
Daily activities (e.g. navigating environments)

What the article says about Age-Related Macular Degeneration (AMD)

1. AMD as a target condition
The review includes patients with dry age-related macular degeneration (AMD) as one of the main diseases treated.
AMD is described as a degenerative retinal disease causing loss of photoreceptors, leading to severe vision loss.

2. Why retinal implants are relevant for AMD
In AMD (especially advanced stages):
The outer retina is damaged, but inner retinal cells remain relatively intact
Retinal implants aim to bypass damaged photoreceptors and stimulate remaining cells to restore some vision

3. Effectiveness in AMD patients
The review suggests that patients with advanced AMD can benefit similarly to those with other retinal degenerations (like retinitis pigmentosa):
Improved light perception
Better object localisation
Functional (but limited) vision gains

4. Key limitation for AMD
Even in AMD:
Vision improvement is partial and low-resolution
Patients remain legally blind despite treatment

4. Strength of evidence
The evidence is limited and uncertain because:
Many studies lacked control groups
Sample sizes were small
There is potential for bias or placebo effects

Overall conclusion:

Retinal implants are a promising option for severe AMD, especially when other treatments are limited.
They can improve functional vision and independence, but:
They do not restore normal sight
Benefits are modest and evidence is still evolving. 

Latest study: 

https://journals.lww.com/retinajournal/abstract/9900/long_term_efficacy_and_safety_of.1349.aspx