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This never-before-seen eye cell could help restore lost vision

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Scientists have identified never-before-seen cells in the human eye that could potentially help reverse vision loss caused by common eye diseases.

The cells were found in donated samples of fetal tissue.

Scientists also identified the same cells in lab-grown models of the human retina.

When transplanted into the retina of mice with a disease similar to retinitis pigmentosa, the stem cells turned into retinal cells needed to process light signals.