![RTÉ - Marian Finucane show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/034/625/small/rte-marian-finucane.jpg)
Summary: During a book review recently we broached the subject of the negative effects that using digital screens can have on our eyes and our sleep patterns. To talk us through it in more detail Marian is joined on the phone by optometrist, Don Stack.