Treating Blindness With Light (and Gene Therapy) | SciShow News

The video discusses a groundbreaking study where a 58-year-old participant regained partial sight using gene therapy and optogenetics. The study, published in Nature Medicine, involved injecting a viral vector carrying the opsin gene into the participant's eye, making retinal cells light-sensitive. The patient learned to use special goggles to interpret visual information, eventually recognizing objects. The video also covers a separate study in Nature Geoscience, revealing high mercury levels in Greenland's meltwater, potentially impacting health and economy due to its toxicity.

What was the age of the study participant who regained some sight?

What condition was the participant suffering from that led to his blindness?

Describe the technique used by researchers to restore sight to the participant.

What were the results of the study regarding the participant's ability to see after training?

What recent findings were reported about mercury levels in meltwater from the Greenland ice sheet?

How does mercury accumulation affect organisms in the food chain?

What are the potential sources of mercury found in the meltwater according to the researchers?