Scientists have developed a way of delivering drugs to treat a common eye disease as eye drops rather than injections.
A major study has found that the risk of getting cancer is significantly reduced if people follow a healthy diet, do regular exercise and reduce their alcohol consumption.
UV rays from the sun can lead to vision loss and cataracts if eyes are not adequately protected.
A study of almost 20 million people has found that having diabetes increases the risk of someone getting certain cancers.
A survey of 1,000 British parents has found that children eat up to five times as much sugar during the summer holidays than they do at other times of the year.