Stem cells treat retinal damage and reconstruct vision

The human retina contains millions of photoreceptors that transmit the collected light signals to the brain. When these light-collecting cells die, they also take away the vision. Medical researchers hope to help blind people restore their vision, and they focus on stem cells. The latest clinical results show that stem cells can indeed replace photoreceptors damaged by macular degeneration, helping patients rebuild their vision.

Retinal macular degeneration is the most common cause of blindness, and a core problem of retinal macular degeneration is the degeneration of retinal pigment epithelial (RPE). These cells are in the meridian close to the choroid (Choroid) and the visual nerve cells, responsible for the function of the blood to the photoreceptor cells. If this layer of cells is damaged or degraded, the photoreceptor cells are not nutritious and gradually degraded and impaired, so the vision is reduced.

Because of the damage of photoreceptors caused by macular degeneration, there is almost no treatment. Even if there are some treatments in Europe and America, patients need to face a lot of expensive treatment costs. If you want to fundamentally treat the disease and restore your vision, the most direct and effective way is to repair the photoreceptor cells.

Thomas Reh, who specializes in retinal development at the University of Washington in the United States, believes that to repair photoreceptor cells, transplanting stem cells will be a reliable method. Rey's labs transform the stem cells into retinal stem cells, which eventually form photoreceptor cells. Ultimately reconstruct people's vision.

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