Everybody knows that eating carrots is good  our eyesight. A new study suggests that grapes are also good  our eyes. Researchers  the National University of Singapore have found that eating just a few grapes a day can improve our vision. This is especially so  people who are older. Dr Eun Kim, the lead researcher, said: "Our study is the first to show that grape consumption beneficially impacts eye health  humans, which is very exciting, especially  a growing, ageing population." Dr Kim added that, "grapes are an easily accessible fruit that studies have shown can have a beneficial impact"  our eyesight. This is good news  people who don't really like carrots.
The study is published  the journal "Food & Function". Thirty-four adults took part  a series of experiments over 16 weeks. Half  the participants ate one-and-a-half cups  grapes per day; the other half ate a placebo snack. Dr Kim did not tell the participants or the researchers whether she was testing the grapes or the snack. She thought that not revealing this information would give better test results. She found that people who ate the grapes had improved muscle strength  the retina. The retina passes information  light to the brain  electrical signals. It protects the eyes  damaging blue light. A lot  blue light comes from computer and smartphone screens, and  LED lights.