Have you ever heard about superheroes who can see in the dark? Well, some people cannot see in the dark, and they have trouble seeing things clearly. This is because there is something wrong with their eyes. The retina in their eyes is not working the way it should be.
But scientists have found a way to help people with this problem. They use a method called gene therapy. It is like giving medicine to the cells of the eyes to make them better. The scientists take a piece of DNA, which is like a code that tells cells what to do, and they insert it into the cells of the retina. This helps the cells work better, like fixing a broken machine.
So, how do they do this? They use a tiny tool called a virus. But don't worry, this kind of virus is not dangerous to humans. It is specially designed to deliver the DNA code to the cells of the eye. It is like a delivery truck that brings medicine to the cells.
By doing this, scientists can fix the problem with the retina and help people see better. It's like giving people who wear glasses a new pair of glasses, but instead, they are getting a new and improved retina.
This kind of therapy is still new, and scientists are still learning how to improve it. But they hope that someday it can help many people who have trouble seeing things to see better than ever before.